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1213300021110 = 235373108427169
BaseRepresentation
bin10001101001111110010…
…100010001011101110110
311021222201222001012000220
4101221332110101131312
5124334314301133420
62325214330115210
7153441464005542
oct21517624213566
94258658035026
101213300021110
1142861525a881
1217718b87bb06
138a54bb93c98
1442a1ca70a22
1521862652840
hex11a7e511776

1213300021110 has 32 divisors (see below), whose sum is σ = 2919726833760. Its totient is φ = 322679251968.

The previous prime is 1213300021103. The next prime is 1213300021117. The reversal of 1213300021110 is 111200033121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1213300021103) and next prime (1213300021117).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1213300021110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213300021117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54202395 + ... + 54224774.

It is an arithmetic number, because the mean of its divisors is an integer number (91241463555).

Almost surely, 21213300021110 is an apocalyptic number.

1213300021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213300021110 is an abundant number, since it is smaller than the sum of its proper divisors (1706426812650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213300021110 is a wasteful number, since it uses less digits than its factorization.

1213300021110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108427552.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1213300021110 its reverse (111200033121), we get a palindrome (1324500054231).

The spelling of 1213300021110 in words is "one trillion, two hundred thirteen billion, three hundred million, twenty-one thousand, one hundred ten".

Divisors: 1 2 3 5 6 10 15 30 373 746 1119 1865 2238 3730 5595 11190 108427169 216854338 325281507 542135845 650563014 1084271690 1626407535 3252815070 40443334037 80886668074 121330002111 202216670185 242660004222 404433340370 606650010555 1213300021110