102100020079 has 2 divisors, whose sum is σ = 102100020080. Its totient is φ = 102100020078.

The previous prime is 102100020059. The next prime is 102100020097. The reversal of 102100020079 is 970020001201.

Together with next prime (102100020097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102100020079 - 2⁵ = 102100020047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102100020049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050010039 + 51050010040.

It is an arithmetic number, because the mean of its divisors is an integer number (51050010040).

Almost surely, 2^102100020079 is an apocalyptic number.

102100020079 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100020079 is an equidigital number, since it uses as much as digits as its factorization.

102100020079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 22.

The spelling of 102100020079 in words is "one hundred two billion, one hundred million, twenty thousand, seventy-nine".