123012211445331 has 32 divisors (see below), whose sum is σ = 177155101347840. Its totient is φ = 75476345023104.

The previous prime is 123012211445327. The next prime is 123012211445381. The reversal of 123012211445331 is 133544112210321.

It is not a de Polignac number, because 123012211445331 - 2² = 123012211445327 is a prime.

It is a super-2 number, since 2×123012211445331² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123012211445292 and 123012211445301.

It is not an unprimeable number, because it can be changed into a prime (123012211445381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15466090 + ... + 22027808.

It is an arithmetic number, because the mean of its divisors is an integer number (5536096917120).

Almost surely, 2^{123012211445331} is an apocalyptic number.

123012211445331 is a deficient number, since it is larger than the sum of its proper divisors (54142889902509).

123012211445331 is a wasteful number, since it uses less digits than its factorization.

123012211445331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563155.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 123012211445331 its reverse (133544112210321), we get a palindrome (256556323655652).

The spelling of 123012211445331 in words is "one hundred twenty-three trillion, twelve billion, two hundred eleven million, four hundred forty-five thousand, three hundred thirty-one".