201002021019977 has 2 divisors, whose sum is σ = 201002021019978. Its totient is φ = 201002021019976.

The previous prime is 201002021019971. The next prime is 201002021020007. The reversal of 201002021019977 is 779910120200102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196371007403536 + 4631013616441 = 14013244^2 + 2151979^2 .

It is a cyclic number.

It is not a de Polignac number, because 201002021019977 - 2²⁴ = 201002004242761 is a prime.

It is not a weakly prime, because it can be changed into another prime (201002021019971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100501010509988 + 100501010509989.

It is an arithmetic number, because the mean of its divisors is an integer number (100501010509989).

Almost surely, 2^{201002021019977} is an apocalyptic number.

It is an amenable number.

201002021019977 is a deficient number, since it is larger than the sum of its proper divisors (1).

201002021019977 is an equidigital number, since it uses as much as digits as its factorization.

201002021019977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 41.

The spelling of 201002021019977 in words is "two hundred one trillion, two billion, twenty-one million, nineteen thousand, nine hundred seventy-seven".