202021020202101 has 16 divisors (see below), whose sum is σ = 285219897174144. Its totient is φ = 126752175627264.

The previous prime is 202021020202061. The next prime is 202021020202117. The reversal of 202021020202101 is 101202020120202.

It is not a de Polignac number, because 202021020202101 - 2⁴² = 197622973690997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202021020202151) 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, 94424836 + ... + 96540621.

It is an arithmetic number, because the mean of its divisors is an integer number (17826243573384).

Almost surely, 2^{202021020202101} is an apocalyptic number.

It is an amenable number.

202021020202101 is a deficient number, since it is larger than the sum of its proper divisors (83198876972043).

202021020202101 is a wasteful number, since it uses less digits than its factorization.

202021020202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190986220.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202021020202101 its reverse (101202020120202), we get a palindrome (303223040322303).

The spelling of 202021020202101 in words is "two hundred two trillion, twenty-one billion, twenty million, two hundred two thousand, one hundred one".