202123211220323 has 16 divisors (see below), whose sum is σ = 214041788941824. Its totient is φ = 190207855424640.

The previous prime is 202123211220299. The next prime is 202123211220347. The reversal of 202123211220323 is 323022112321202.

It is an interprime number because it is at equal distance from previous prime (202123211220299) and next prime (202123211220347).

It is not a de Polignac number, because 202123211220323 - 2⁸ = 202123211220067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202123211220292 and 202123211220301.

It is not an unprimeable number, because it can be changed into a prime (202123211220223) 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, 6920354186 + ... + 6920383392.

It is an arithmetic number, because the mean of its divisors is an integer number (13377611808864).

Almost surely, 2^{202123211220323} is an apocalyptic number.

202123211220323 is a deficient number, since it is larger than the sum of its proper divisors (11918577721501).

202123211220323 is a wasteful number, since it uses less digits than its factorization.

202123211220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70402.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 202123211220323 its reverse (323022112321202), we get a palindrome (525145323541525).

The spelling of 202123211220323 in words is "two hundred two trillion, one hundred twenty-three billion, two hundred eleven million, two hundred twenty thousand, three hundred twenty-three".