123411340521220 has 24 divisors (see below), whose sum is σ = 260079588304704. Its totient is φ = 49190103216096.

The previous prime is 123411340521211. The next prime is 123411340521247. The reversal of 123411340521220 is 22125043114321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10902056224 + ... + 10902067543.

It is an arithmetic number, because the mean of its divisors is an integer number (10836649512696).

Almost surely, 2^{123411340521220} is an apocalyptic number.

123411340521220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123411340521220 is an abundant number, since it is smaller than the sum of its proper divisors (136668247783484).

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

123411340521220 is a wasteful number, since it uses less digits than its factorization.

123411340521220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21804124059 (or 21804124057 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 123411340521220 its reverse (22125043114321), we get a palindrome (145536383635541).

The spelling of 123411340521220 in words is "one hundred twenty-three trillion, four hundred eleven billion, three hundred forty million, five hundred twenty-one thousand, two hundred twenty".