202102020121012 has 24 divisors (see below), whose sum is σ = 385955230943520. Its totient is φ = 91835006595360.

The previous prime is 202102020120997. The next prime is 202102020121061. The reversal of 202102020121012 is 210121020201202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738561778 + ... + 738835369.

It is an arithmetic number, because the mean of its divisors is an integer number (16081467955980).

Almost surely, 2^{202102020121012} is an apocalyptic number.

202102020121012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

202102020121012 is a deficient number, since it is larger than the sum of its proper divisors (183853210822508).

202102020121012 is a wasteful number, since it uses less digits than its factorization.

202102020121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477400271 (or 1477400269 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202102020121012 its reverse (210121020201202), we get a palindrome (412223040322214).

The spelling of 202102020121012 in words is "two hundred two trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, twelve".