321140125512 has 96 divisors (see below), whose sum is σ = 873189790200. Its totient is φ = 106624309248.

The previous prime is 321140125477. The next prime is 321140125517. The reversal of 321140125512 is 215521041123.

It is a happy number.

321140125512 is a `hidden beast` number, since 3 + 2 + 1 + 1 + 401 + 255 + 1 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 275870754756 + 45269370756 = 525234^2 + 212766^2 .

It is a super-2 number, since 2×321140125512² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321140125517) 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 23 ways as a sum of consecutive naturals, for example, 61365648 + ... + 61370880.

Almost surely, 2^321140125512 is an apocalyptic number.

It is an amenable number.

321140125512 is an abundant number, since it is smaller than the sum of its proper divisors (552049664688).

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

321140125512 is a wasteful number, since it uses less digits than its factorization.

321140125512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447 (or 8440 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 321140125512 its reverse (215521041123), we get a palindrome (536661166635).

The spelling of 321140125512 in words is "three hundred twenty-one billion, one hundred forty million, one hundred twenty-five thousand, five hundred twelve".