202123230121 has 8 divisors (see below), whose sum is σ = 216055373184. Its totient is φ = 188619768480.

The previous prime is 202123230109. The next prime is 202123230161. The reversal of 202123230121 is 121032321202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202123230121 - 2³¹ = 199975746473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202123230161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107169381 + ... + 107171266.

It is an arithmetic number, because the mean of its divisors is an integer number (27006921648).

Almost surely, 2^202123230121 is an apocalyptic number.

It is an amenable number.

202123230121 is a deficient number, since it is larger than the sum of its proper divisors (13932143063).

202123230121 is a wasteful number, since it uses less digits than its factorization.

202123230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214340711.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 202123230121 its reverse (121032321202), we get a palindrome (323155551323).

The spelling of 202123230121 in words is "two hundred two billion, one hundred twenty-three million, two hundred thirty thousand, one hundred twenty-one".