102122200991 has 2 divisors, whose sum is σ = 102122200992. Its totient is φ = 102122200990.

The previous prime is 102122200987. The next prime is 102122201021. The reversal of 102122200991 is 199002221201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102122200991 - 2² = 102122200987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102122200091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51061100495 + 51061100496.

It is an arithmetic number, because the mean of its divisors is an integer number (51061100496).

Almost surely, 2^102122200991 is an apocalyptic number.

102122200991 is a deficient number, since it is larger than the sum of its proper divisors (1).

102122200991 is an equidigital number, since it uses as much as digits as its factorization.

102122200991 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 29.

The spelling of 102122200991 in words is "one hundred two billion, one hundred twenty-two million, two hundred thousand, nine hundred ninety-one".