123021220202323 has 4 divisors (see below), whose sum is σ = 123906264952120. Its totient is φ = 122136175452528.

The previous prime is 123021220202299. The next prime is 123021220202341. The reversal of 123021220202323 is 323202022120321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123021220202323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123021220202423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 442522374690 + ... + 442522374967.

It is an arithmetic number, because the mean of its divisors is an integer number (30976566238030).

Almost surely, 2^{123021220202323} is an apocalyptic number.

123021220202323 is a deficient number, since it is larger than the sum of its proper divisors (885044749797).

123021220202323 is an equidigital number, since it uses as much as digits as its factorization.

123021220202323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885044749796.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 123021220202323 its reverse (323202022120321), we get a palindrome (446223242322644).

The spelling of 123021220202323 in words is "one hundred twenty-three trillion, twenty-one billion, two hundred twenty million, two hundred two thousand, three hundred twenty-three".