201002011121957 has 2 divisors, whose sum is σ = 201002011121958. Its totient is φ = 201002011121956.

The previous prime is 201002011121831. The next prime is 201002011122013. The reversal of 201002011121957 is 759121110200102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200337018170116 + 664992951841 = 14154046^2 + 815471^2 .

It is a cyclic number.

It is not a de Polignac number, because 201002011121957 - 2¹² = 201002011117861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201002011421957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100501005560978 + 100501005560979.

It is an arithmetic number, because the mean of its divisors is an integer number (100501005560979).

Almost surely, 2^{201002011121957} is an apocalyptic number.

It is an amenable number.

201002011121957 is a deficient number, since it is larger than the sum of its proper divisors (1).

201002011121957 is an equidigital number, since it uses as much as digits as its factorization.

201002011121957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 32.

The spelling of 201002011121957 in words is "two hundred one trillion, two billion, eleven million, one hundred twenty-one thousand, nine hundred fifty-seven".