11612155651121 has 2 divisors, whose sum is σ = 11612155651122. Its totient is φ = 11612155651120.

The previous prime is 11612155651073. The next prime is 11612155651127. The reversal of 11612155651121 is 12115655121611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9649814152225 + 1962341498896 = 3106415^2 + 1400836^2 .

It is a cyclic number.

It is not a de Polignac number, because 11612155651121 - 2³⁴ = 11594975781937 is a prime.

It is a super-2 number, since 2×11612155651121² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11612155651127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5806077825560 + 5806077825561.

It is an arithmetic number, because the mean of its divisors is an integer number (5806077825561).

Almost surely, 2^{11612155651121} is an apocalyptic number.

It is an amenable number.

11612155651121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11612155651121 is an equidigital number, since it uses as much as digits as its factorization.

11612155651121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 38.

The spelling of 11612155651121 in words is "eleven trillion, six hundred twelve billion, one hundred fifty-five million, six hundred fifty-one thousand, one hundred twenty-one".