102010120109 has 2 divisors, whose sum is σ = 102010120110. Its totient is φ = 102010120108.

The previous prime is 102010120067. The next prime is 102010120141. The reversal of 102010120109 is 901021010201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89466792100 + 12543328009 = 299110^2 + 111997^2 .

It is a cyclic number.

It is not a de Polignac number, because 102010120109 - 2²⁰ = 102009071533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102010120159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005060054 + 51005060055.

It is an arithmetic number, because the mean of its divisors is an integer number (51005060055).

Almost surely, 2^102010120109 is an apocalyptic number.

It is an amenable number.

102010120109 is a deficient number, since it is larger than the sum of its proper divisors (1).

102010120109 is an equidigital number, since it uses as much as digits as its factorization.

102010120109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 102010120109 in words is "one hundred two billion, ten million, one hundred twenty thousand, one hundred nine".