123312221201031 has 16 divisors (see below), whose sum is σ = 172452744090624. Its totient is φ = 78284469350304.

The previous prime is 123312221201017. The next prime is 123312221201093. The reversal of 123312221201031 is 130102122213321.

It is not a de Polignac number, because 123312221201031 - 2⁴¹ = 121113197945479 is a prime.

It is a super-2 number, since 2×123312221201031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123312221200992 and 123312221201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123312221201531) 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, 11818302355 + ... + 11818312788.

It is an arithmetic number, because the mean of its divisors is an integer number (10778296505664).

Almost surely, 2^{123312221201031} is an apocalyptic number.

123312221201031 is a deficient number, since it is larger than the sum of its proper divisors (49140522889593).

123312221201031 is a wasteful number, since it uses less digits than its factorization.

123312221201031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23636615230.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 123312221201031 its reverse (130102122213321), we get a palindrome (253414343414352).

The spelling of 123312221201031 in words is "one hundred twenty-three trillion, three hundred twelve billion, two hundred twenty-one million, two hundred one thousand, thirty-one".