202021012002157 has 2 divisors, whose sum is σ = 202021012002158. Its totient is φ = 202021012002156.

The previous prime is 202021012002091. The next prime is 202021012002247. The reversal of 202021012002157 is 751200210120202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201229942286916 + 791069715241 = 14185554^2 + 889421^2 .

It is a cyclic number.

It is not a de Polignac number, because 202021012002157 - 2¹⁹ = 202021011477869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202021012092157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010506001078 + 101010506001079.

It is an arithmetic number, because the mean of its divisors is an integer number (101010506001079).

Almost surely, 2^{202021012002157} is an apocalyptic number.

It is an amenable number.

202021012002157 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021012002157 is an equidigital number, since it uses as much as digits as its factorization.

202021012002157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 202021012002157 its reverse (751200210120202), we get a palindrome (953221222122359).

The spelling of 202021012002157 in words is "two hundred two trillion, twenty-one billion, twelve million, two thousand, one hundred fifty-seven".