202023213131121 has 16 divisors (see below), whose sum is σ = 269447544140544. Its totient is φ = 134640513388544.

The previous prime is 202023213131107. The next prime is 202023213131149. The reversal of 202023213131121 is 121131312320202.

It is a cyclic number.

It is not a de Polignac number, because 202023213131121 - 2¹⁰ = 202023213130097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202023213131091 and 202023213131100.

It is not an unprimeable number, because it can be changed into a prime (202023213131021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867505720 + ... + 867738566.

It is an arithmetic number, because the mean of its divisors is an integer number (16840471508784).

Almost surely, 2^{202023213131121} is an apocalyptic number.

It is an amenable number.

202023213131121 is a deficient number, since it is larger than the sum of its proper divisors (67424331009423).

202023213131121 is a wasteful number, since it uses less digits than its factorization.

202023213131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321000.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 202023213131121 its reverse (121131312320202), we get a palindrome (323154525451323).

The spelling of 202023213131121 in words is "two hundred two trillion, twenty-three billion, two hundred thirteen million, one hundred thirty-one thousand, one hundred twenty-one".