202023102132121 has 4 divisors (see below), whose sum is σ = 212655896981200. Its totient is φ = 191390307283044.

The previous prime is 202023102132043. The next prime is 202023102132149. The reversal of 202023102132121 is 121231201320202.

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 202023102132121 - 2³³ = 202014512197529 is a prime.

It is a super-2 number, since 2×202023102132121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202023102132092 and 202023102132101.

It is not an unprimeable number, because it can be changed into a prime (202023102133121) 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, 5316397424511 + ... + 5316397424548.

It is an arithmetic number, because the mean of its divisors is an integer number (53163974245300).

Almost surely, 2^{202023102132121} is an apocalyptic number.

It is an amenable number.

202023102132121 is a deficient number, since it is larger than the sum of its proper divisors (10632794849079).

202023102132121 is a wasteful number, since it uses less digits than its factorization.

202023102132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10632794849078.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 202023102132121 its reverse (121231201320202), we get a palindrome (323254303452323).

The spelling of 202023102132121 in words is "two hundred two trillion, twenty-three billion, one hundred two million, one hundred thirty-two thousand, one hundred twenty-one".