201000010210991 has 2 divisors, whose sum is σ = 201000010210992. Its totient is φ = 201000010210990.

The previous prime is 201000010210871. The next prime is 201000010211053. The reversal of 201000010210991 is 199012010000102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201000010210991 - 2⁴⁶ = 130631266033327 is a prime.

It is a super-5 number, since 5×201000010210991⁵ (a number of 73 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201000010210991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201000010216991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500005105495 + 100500005105496.

It is an arithmetic number, because the mean of its divisors is an integer number (100500005105496).

Almost surely, 2^{201000010210991} is an apocalyptic number.

201000010210991 is a deficient number, since it is larger than the sum of its proper divisors (1).

201000010210991 is an equidigital number, since it uses as much as digits as its factorization.

201000010210991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 201000010210991 in words is "two hundred one trillion, ten million, two hundred ten thousand, nine hundred ninety-one".