123112021223311 has 4 divisors (see below), whose sum is σ = 123115928208624. Its totient is φ = 123108114238000.

The previous prime is 123112021223309. The next prime is 123112021223327. The reversal of 123112021223311 is 113322120211321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123112021223311 - 2¹ = 123112021223309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123112024223311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1953445390 + ... + 1953508411.

It is an arithmetic number, because the mean of its divisors is an integer number (30778982052156).

Almost surely, 2^{123112021223311} is an apocalyptic number.

123112021223311 is a deficient number, since it is larger than the sum of its proper divisors (3906985313).

123112021223311 is an equidigital number, since it uses as much as digits as its factorization.

123112021223311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906985312.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 123112021223311 its reverse (113322120211321), we get a palindrome (236434141434632).

The spelling of 123112021223311 in words is "one hundred twenty-three trillion, one hundred twelve billion, twenty-one million, two hundred twenty-three thousand, three hundred eleven".