1232256522321 has 36 divisors (see below), whose sum is σ = 2009324713396. Its totient is φ = 726637728960.

The previous prime is 1232256522317. The next prime is 1232256522349.

It is a happy number.

1232256522321 is a `hidden beast` number, since 1 + 2 + 32 + 256 + 52 + 2 + 321 = 666.

1232256522321 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 1143753247296 + 88503275025 = 1069464^2 + 297495^2 .

It is not a de Polignac number, because 1232256522321 - 2² = 1232256522317 is a prime.

It is a super-2 number, since 2×1232256522321² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1232256522221) 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 35 ways as a sum of consecutive naturals, for example, 15250906 + ... + 15331491.

Almost surely, 2^{1232256522321} is an apocalyptic number.

1232256522321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1232256522321 is a deficient number, since it is larger than the sum of its proper divisors (777068191075).

1232256522321 is a wasteful number, since it uses less digits than its factorization.

1232256522321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30582462 (or 30582448 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The spelling of 1232256522321 in words is "one trillion, two hundred thirty-two billion, two hundred fifty-six million, five hundred twenty-two thousand, three hundred twenty-one".