102126525121 has 2 divisors, whose sum is σ = 102126525122. Its totient is φ = 102126525120.

The previous prime is 102126525113. The next prime is 102126525139. The reversal of 102126525121 is 121525621201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77359634496 + 24766890625 = 278136^2 + 157375^2 .

It is a cyclic number.

It is not a de Polignac number, because 102126525121 - 2³ = 102126525113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102126525121.

It is not a weakly prime, because it can be changed into another prime (102126525161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51063262560 + 51063262561.

It is an arithmetic number, because the mean of its divisors is an integer number (51063262561).

Almost surely, 2^102126525121 is an apocalyptic number.

It is an amenable number.

102126525121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102126525121 is an equidigital number, since it uses as much as digits as its factorization.

102126525121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 102126525121 in words is "one hundred two billion, one hundred twenty-six million, five hundred twenty-five thousand, one hundred twenty-one".