321120125011 has 64 divisors (see below), whose sum is σ = 401909760000. Its totient is φ = 255965149440.

The previous prime is 321120124991. The next prime is 321120125017. The reversal of 321120125011 is 110521021123.

It is not a de Polignac number, because 321120125011 - 2³³ = 312530190419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321120125011.

It is not an unprimeable number, because it can be changed into a prime (321120125017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32213350 + ... + 32223316.

It is an arithmetic number, because the mean of its divisors is an integer number (6279840000).

Almost surely, 2^321120125011 is an apocalyptic number.

321120125011 is a deficient number, since it is larger than the sum of its proper divisors (80789634989).

321120125011 is an equidigital number, since it uses as much as digits as its factorization.

321120125011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10137 (or 10123 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 321120125011 its reverse (110521021123), we get a palindrome (431641146134).

The spelling of 321120125011 in words is "three hundred twenty-one billion, one hundred twenty million, one hundred twenty-five thousand, eleven".