123111113300220 has 48 divisors (see below), whose sum is σ = 344785425223680. Its totient is φ = 32822553262656.

The previous prime is 123111113300111. The next prime is 123111113300323. The reversal of 123111113300220 is 22003311111321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220874052 + ... + 221430731.

It is an arithmetic number, because the mean of its divisors is an integer number (7183029692160).

Almost surely, 2^{123111113300220} is an apocalyptic number.

123111113300220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123111113300220 is an abundant number, since it is smaller than the sum of its proper divisors (221674311923460).

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

123111113300220 is a wasteful number, since it uses less digits than its factorization.

123111113300220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442309434 (or 442309432 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 123111113300220 its reverse (22003311111321), we get a palindrome (145114424411541).

The spelling of 123111113300220 in words is "one hundred twenty-three trillion, one hundred eleven billion, one hundred thirteen million, three hundred thousand, two hundred twenty".