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1213012011110 = 252631583291359
BaseRepresentation
bin10001101001101101001…
…001100110100001100110
311021221222220002202120212
4101221231021212201212
5124333222033323420
62325130001055422
7153431365654334
oct21515511464146
94257886082525
101213012011110
11428487725689
1217710b327572
138a504303773
14429d26dcb54
15218472113c5
hex11a6d266866

1213012011110 has 32 divisors (see below), whose sum is σ = 2193115668480. Its totient is φ = 483052917088.

The previous prime is 1213012011089. The next prime is 1213012011119. The reversal of 1213012011110 is 111102103121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213012011119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4017611 + ... + 4308969.

It is an arithmetic number, because the mean of its divisors is an integer number (68534864640).

Almost surely, 21213012011110 is an apocalyptic number.

1213012011110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213012011110 is a deficient number, since it is larger than the sum of its proper divisors (980103657370).

1213012011110 is a wasteful number, since it uses less digits than its factorization.

1213012011110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293212.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 1213012011110 its reverse (111102103121), we get a palindrome (1324114114231).

The spelling of 1213012011110 in words is "one trillion, two hundred thirteen billion, twelve million, eleven thousand, one hundred ten".

Divisors: 1 2 5 10 263 526 1315 1583 2630 3166 7915 15830 291359 416329 582718 832658 1456795 2081645 2913590 4163290 76627417 153254834 383137085 461221297 766274170 922442594 2306106485 4612212970 121301201111 242602402222 606506005555 1213012011110