202102013123121 has 8 divisors (see below), whose sum is σ = 269533342619424. Its totient is φ = 134702679521120.

The previous prime is 202102013123111. The next prime is 202102013123287. The reversal of 202102013123121 is 121321310201202.

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 202102013123121 - 2⁷ = 202102013122993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (202102013123111) 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, 7998958836 + ... + 7998984101.

It is an arithmetic number, because the mean of its divisors is an integer number (33691667827428).

Almost surely, 2^{202102013123121} is an apocalyptic number.

It is an amenable number.

202102013123121 is a deficient number, since it is larger than the sum of its proper divisors (67431329496303).

202102013123121 is a wasteful number, since it uses less digits than its factorization.

202102013123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15997947151.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 202102013123121 its reverse (121321310201202), we get a palindrome (323423323324323).

The spelling of 202102013123121 in words is "two hundred two trillion, one hundred two billion, thirteen million, one hundred twenty-three thousand, one hundred twenty-one".