123202021132321 has 4 divisors (see below), whose sum is σ = 126067184414512. Its totient is φ = 120336857850132.

The previous prime is 123202021132313. The next prime is 123202021132423. The reversal of 123202021132321 is 123231120202321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123202021132321 - 2³ = 123202021132313 is a prime.

It is a super-2 number, since 2×123202021132321² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123202021232321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1432581641031 + ... + 1432581641116.

It is an arithmetic number, because the mean of its divisors is an integer number (31516796103628).

Almost surely, 2^{123202021132321} is an apocalyptic number.

It is an amenable number.

123202021132321 is a deficient number, since it is larger than the sum of its proper divisors (2865163282191).

123202021132321 is an equidigital number, since it uses as much as digits as its factorization.

123202021132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865163282190.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 123202021132321 its reverse (123231120202321), we get a palindrome (246433141334642).

The spelling of 123202021132321 in words is "one hundred twenty-three trillion, two hundred two billion, twenty-one million, one hundred thirty-two thousand, three hundred twenty-one".