123031222122011 has 16 divisors (see below), whose sum is σ = 144043250312640. Its totient is φ = 102878467960320.

The previous prime is 123031222121939. The next prime is 123031222122059. The reversal of 123031222122011 is 110221222130321.

It is a cyclic number.

It is not a de Polignac number, because 123031222122011 - 2¹⁸ = 123031221859867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123031222322011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3777056 + ... + 16134701.

It is an arithmetic number, because the mean of its divisors is an integer number (9002703144540).

Almost surely, 2^{123031222122011} is an apocalyptic number.

123031222122011 is a deficient number, since it is larger than the sum of its proper divisors (21012028190629).

123031222122011 is a wasteful number, since it uses less digits than its factorization.

123031222122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19933334.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 123031222122011 its reverse (110221222130321), we get a palindrome (233252444252332).

The spelling of 123031222122011 in words is "one hundred twenty-three trillion, thirty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, eleven".