102015254236121 has 2 divisors, whose sum is σ = 102015254236122. Its totient is φ = 102015254236120.

The previous prime is 102015254236099. The next prime is 102015254236157. The reversal of 102015254236121 is 121632452510201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59345761104400 + 42669493131721 = 7703620^2 + 6532189^2 .

It is a cyclic number.

It is not a de Polignac number, because 102015254236121 - 2⁶ = 102015254236057 is a prime.

It is a super-2 number, since 2×102015254236121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102015254236321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51007627118060 + 51007627118061.

It is an arithmetic number, because the mean of its divisors is an integer number (51007627118061).

Almost surely, 2^{102015254236121} is an apocalyptic number.

It is an amenable number.

102015254236121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102015254236121 is an equidigital number, since it uses as much as digits as its factorization.

102015254236121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 102015254236121 in words is "one hundred two trillion, fifteen billion, two hundred fifty-four million, two hundred thirty-six thousand, one hundred twenty-one".