102102211979 has 2 divisors, whose sum is σ = 102102211980. Its totient is φ = 102102211978.

The previous prime is 102102211963. The next prime is 102102211993. The reversal of 102102211979 is 979112201201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102102211979 - 2⁴ = 102102211963 is a prime.

It is not a weakly prime, because it can be changed into another prime (102102211949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51051105989 + 51051105990.

It is an arithmetic number, because the mean of its divisors is an integer number (51051105990).

Almost surely, 2^102102211979 is an apocalyptic number.

102102211979 is a deficient number, since it is larger than the sum of its proper divisors (1).

102102211979 is an equidigital number, since it uses as much as digits as its factorization.

102102211979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 102102211979 in words is "one hundred two billion, one hundred two million, two hundred eleven thousand, nine hundred seventy-nine".