202101121002121 has 16 divisors (see below), whose sum is σ = 220772487571200. Its totient is φ = 183479521680000.

The previous prime is 202101121002019. The next prime is 202101121002173. The reversal of 202101121002121 is 121200121101202.

It is a cyclic number.

It is not a de Polignac number, because 202101121002121 - 2⁹ = 202101121001609 is a prime.

It is a super-2 number, since 2×202101121002121² (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 = 202101121002095 and 202101121002104.

It is not an unprimeable number, because it can be changed into a prime (202101121062121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402960535 + ... + 403461763.

It is an arithmetic number, because the mean of its divisors is an integer number (13798280473200).

Almost surely, 2^{202101121002121} is an apocalyptic number.

It is an amenable number.

202101121002121 is a deficient number, since it is larger than the sum of its proper divisors (18671366569079).

202101121002121 is a wasteful number, since it uses less digits than its factorization.

202101121002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550800.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 202101121002121 its reverse (121200121101202), we get a palindrome (323301242103323).

The spelling of 202101121002121 in words is "two hundred two trillion, one hundred one billion, one hundred twenty-one million, two thousand, one hundred twenty-one".