210202020961 has 2 divisors, whose sum is σ = 210202020962. Its totient is φ = 210202020960.

The previous prime is 210202020953. The next prime is 210202021027. The reversal of 210202020961 is 169020202012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209983897600 + 218123361 = 458240^2 + 14769^2 .

It is a cyclic number.

It is not a de Polignac number, because 210202020961 - 2³ = 210202020953 is a prime.

It is not a weakly prime, because it can be changed into another prime (210202020901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105101010480 + 105101010481.

It is an arithmetic number, because the mean of its divisors is an integer number (105101010481).

Almost surely, 2^210202020961 is an apocalyptic number.

It is an amenable number.

210202020961 is a deficient number, since it is larger than the sum of its proper divisors (1).

210202020961 is an equidigital number, since it uses as much as digits as its factorization.

210202020961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 210202020961 its reverse (169020202012), we get a palindrome (379222222973).

The spelling of 210202020961 in words is "two hundred ten billion, two hundred two million, twenty thousand, nine hundred sixty-one".