123021303231321 has 64 divisors (see below), whose sum is σ = 204239222956800. Its totient is φ = 72527877964800.

The previous prime is 123021303231271. The next prime is 123021303231371. The reversal of 123021303231321 is 123132303120321.

123021303231321 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 2 + 1 + 303 + 2 + 31 + 321 = 666.

It is an interprime number because it is at equal distance from previous prime (123021303231271) and next prime (123021303231371).

It is not a de Polignac number, because 123021303231321 - 2³⁰ = 123020229489497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (123021303231371) 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 63 ways as a sum of consecutive naturals, for example, 50693415 + ... + 53064723.

It is an arithmetic number, because the mean of its divisors is an integer number (3191237858700).

Almost surely, 2^{123021303231321} is an apocalyptic number.

123021303231321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123021303231321 is a deficient number, since it is larger than the sum of its proper divisors (81217919725479).

123021303231321 is a wasteful number, since it uses less digits than its factorization.

123021303231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376087 (or 2376081 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 123021303231321 its reverse (123132303120321), we get a palindrome (246153606351642).

The spelling of 123021303231321 in words is "one hundred twenty-three trillion, twenty-one billion, three hundred three million, two hundred thirty-one thousand, three hundred twenty-one".