202020102121211 has 32 divisors (see below), whose sum is σ = 231159148738560. Its totient is φ = 174890136153600.

The previous prime is 202020102121153. The next prime is 202020102121237. The reversal of 202020102121211 is 112121201020202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202020102121211 is a prime.

It is a super-2 number, since 2×202020102121211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202020102121211.

It is not an unprimeable number, because it can be changed into a prime (202020102127211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13502840 + ... + 24215013.

It is an arithmetic number, because the mean of its divisors is an integer number (7223723398080).

Almost surely, 2^{202020102121211} is an apocalyptic number.

202020102121211 is a deficient number, since it is larger than the sum of its proper divisors (29139046617349).

202020102121211 is a wasteful number, since it uses less digits than its factorization.

202020102121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37718147.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202020102121211 its reverse (112121201020202), we get a palindrome (314141303141413).

The spelling of 202020102121211 in words is "two hundred two trillion, twenty billion, one hundred two million, one hundred twenty-one thousand, two hundred eleven".