202101102002121 has 16 divisors (see below), whose sum is σ = 308953820617728. Its totient is φ = 115115005270800.

The previous prime is 202101102002083. The next prime is 202101102002207. The reversal of 202101102002121 is 121200201101202.

It is not a de Polignac number, because 202101102002121 - 2¹³ = 202101101993929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202101102002121.

It is not an unprimeable number, because it can be changed into a prime (202101102002521) 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, 15472440415 + ... + 15472453476.

It is an arithmetic number, because the mean of its divisors is an integer number (19309613788608).

Almost surely, 2^{202101102002121} is an apocalyptic number.

202101102002121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202101102002121 is a deficient number, since it is larger than the sum of its proper divisors (106852718615607).

202101102002121 is a wasteful number, since it uses less digits than its factorization.

202101102002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30944894212.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202101102002121 its reverse (121200201101202), we get a palindrome (323301303103323).

The spelling of 202101102002121 in words is "two hundred two trillion, one hundred one billion, one hundred two million, two thousand, one hundred twenty-one".