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1212002111110 = 257171018489169
BaseRepresentation
bin10001101000110000111…
…101001000111010000110
311021212101111210112020011
4101220300331020322012
5124324140020023420
62324441443300434
7153364353651430
oct21506075107206
94255344715204
101212002111110
1142800965a88a
12176a8907a71a
138a3a300b3bb
1442938535650
15217d872695a
hex11a30f48e86

1212002111110 has 32 divisors (see below), whose sum is σ = 2639923928640. Its totient is φ = 391099840512.

The previous prime is 1212002111077. The next prime is 1212002111119. The reversal of 1212002111110 is 111112002121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212002111119) 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, 509243395 + ... + 509245774.

It is an arithmetic number, because the mean of its divisors is an integer number (82497622770).

Almost surely, 21212002111110 is an apocalyptic number.

1212002111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212002111110 is an abundant number, since it is smaller than the sum of its proper divisors (1427921817530).

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

1212002111110 is a wasteful number, since it uses less digits than its factorization.

1212002111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018489200.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212002111110 its reverse (111112002121), we get a palindrome (1323114113231).

The spelling of 1212002111110 in words is "one trillion, two hundred twelve billion, two million, one hundred eleven thousand, one hundred ten".

Divisors: 1 2 5 7 10 14 17 34 35 70 85 119 170 238 595 1190 1018489169 2036978338 5092445845 7129424183 10184891690 14258848366 17314315873 34628631746 35647120915 71294241830 86571579365 121200211111 173143158730 242400422222 606001055555 1212002111110