202012101961 has 2 divisors, whose sum is σ = 202012101962. Its totient is φ = 202012101960.

The previous prime is 202012101953. The next prime is 202012102031. The reversal of 202012101961 is 169101210202.

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., 134076807225 + 67935294736 = 366165^2 + 260644^2 .

It is a cyclic number.

It is not a de Polignac number, because 202012101961 - 2³ = 202012101953 is a prime.

It is not a weakly prime, because it can be changed into another prime (202012101901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101006050980 + 101006050981.

It is an arithmetic number, because the mean of its divisors is an integer number (101006050981).

Almost surely, 2^202012101961 is an apocalyptic number.

It is an amenable number.

202012101961 is a deficient number, since it is larger than the sum of its proper divisors (1).

202012101961 is an equidigital number, since it uses as much as digits as its factorization.

202012101961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 202012101961 in words is "two hundred two billion, twelve million, one hundred one thousand, nine hundred sixty-one".