123201111520513 has 32 divisors (see below), whose sum is σ = 142336310852736. Its totient is φ = 105625107883008.

The previous prime is 123201111520397. The next prime is 123201111520523. The reversal of 123201111520513 is 315025111102321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123201111520513 - 2²⁵ = 123201077966081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123201111520523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12393631 + ... + 20000107.

It is an arithmetic number, because the mean of its divisors is an integer number (4448009714148).

Almost surely, 2^{123201111520513} is an apocalyptic number.

123201111520513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123201111520513 is a deficient number, since it is larger than the sum of its proper divisors (19135199332223).

123201111520513 is a wasteful number, since it uses less digits than its factorization.

123201111520513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7607473.

The product of its (nonzero) digits is 1800, while the sum is 28.

Adding to 123201111520513 its reverse (315025111102321), we get a palindrome (438226222622834).

The spelling of 123201111520513 in words is "one hundred twenty-three trillion, two hundred one billion, one hundred eleven million, five hundred twenty thousand, five hundred thirteen".