123152251321 has 24 divisors (see below), whose sum is σ = 138632364864. Its totient is φ = 109286100000.

The previous prime is 123152251319. The next prime is 123152251331.

123152251321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 123152251321 - 2¹ = 123152251319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123152251321.

It is not an unprimeable number, because it can be changed into a prime (123152251331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 796726 + ... + 938656.

It is an arithmetic number, because the mean of its divisors is an integer number (5776348536).

Almost surely, 2^123152251321 is an apocalyptic number.

123152251321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123152251321 is a deficient number, since it is larger than the sum of its proper divisors (15480113543).

123152251321 is a wasteful number, since it uses less digits than its factorization.

123152251321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142125 (or 142114 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

It can be divided in two parts, 123152 and 251321, that added together give a palindrome (374473).

The spelling of 123152251321 in words is "one hundred twenty-three billion, one hundred fifty-two million, two hundred fifty-one thousand, three hundred twenty-one".