202131212140121 has 8 divisors (see below), whose sum is σ = 220506882391488. Its totient is φ = 183755559474000.

The previous prime is 202131212140049. The next prime is 202131212140141. The reversal of 202131212140121 is 121041212131202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202131212140121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202131212140141) 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 7 ways as a sum of consecutive naturals, for example, 34940951 + ... + 40312931.

It is an arithmetic number, because the mean of its divisors is an integer number (27563360298936).

Almost surely, 2^{202131212140121} is an apocalyptic number.

It is an amenable number.

202131212140121 is a deficient number, since it is larger than the sum of its proper divisors (18375670251367).

202131212140121 is a wasteful number, since it uses less digits than its factorization.

202131212140121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8792623.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 202131212140121 its reverse (121041212131202), we get a palindrome (323172424271323).

The spelling of 202131212140121 in words is "two hundred two trillion, one hundred thirty-one billion, two hundred twelve million, one hundred forty thousand, one hundred twenty-one".