101202022011991 has 2 divisors, whose sum is σ = 101202022011992. Its totient is φ = 101202022011990.

The previous prime is 101202022011977. The next prime is 101202022012009. The reversal of 101202022011991 is 199110220202101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101202022011991 - 2¹³ = 101202022003799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101202022011901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50601011005995 + 50601011005996.

It is an arithmetic number, because the mean of its divisors is an integer number (50601011005996).

Almost surely, 2^{101202022011991} is an apocalyptic number.

101202022011991 is a deficient number, since it is larger than the sum of its proper divisors (1).

101202022011991 is an equidigital number, since it uses as much as digits as its factorization.

101202022011991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 31.

The spelling of 101202022011991 in words is "one hundred one trillion, two hundred two billion, twenty-two million, eleven thousand, nine hundred ninety-one".