102212100979 has 2 divisors, whose sum is σ = 102212100980. Its totient is φ = 102212100978.

The previous prime is 102212100967. The next prime is 102212101009. The reversal of 102212100979 is 979001212201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102212100979 - 2²³ = 102203712371 is a prime.

It is not a weakly prime, because it can be changed into another prime (102212107979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51106050489 + 51106050490.

It is an arithmetic number, because the mean of its divisors is an integer number (51106050490).

Almost surely, 2^102212100979 is an apocalyptic number.

102212100979 is a deficient number, since it is larger than the sum of its proper divisors (1).

102212100979 is an equidigital number, since it uses as much as digits as its factorization.

102212100979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The spelling of 102212100979 in words is "one hundred two billion, two hundred twelve million, one hundred thousand, nine hundred seventy-nine".