102132220991 has 2 divisors, whose sum is σ = 102132220992. Its totient is φ = 102132220990.

The previous prime is 102132220943. The next prime is 102132220997. The reversal of 102132220991 is 199022231201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102132220991 - 2³⁰ = 101058479167 is a prime.

It is a super-2 number, since 2×102132220991² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102132220997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51066110495 + 51066110496.

It is an arithmetic number, because the mean of its divisors is an integer number (51066110496).

Almost surely, 2^102132220991 is an apocalyptic number.

102132220991 is a deficient number, since it is larger than the sum of its proper divisors (1).

102132220991 is an equidigital number, since it uses as much as digits as its factorization.

102132220991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 102132220991 in words is "one hundred two billion, one hundred thirty-two million, two hundred twenty thousand, nine hundred ninety-one".