102015254233121 has 4 divisors (see below), whose sum is σ = 105533021620500. Its totient is φ = 98497486845744.

The previous prime is 102015254233043. The next prime is 102015254233187. The reversal of 102015254233121 is 121332452510201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58426684750225 + 43588569482896 = 7643735^2 + 6602164^2 .

It is a cyclic number.

It is not a de Polignac number, because 102015254233121 - 2²² = 102015250038817 is a prime.

It is a super-2 number, since 2×102015254233121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102015254236121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1758883693646 + ... + 1758883693703.

It is an arithmetic number, because the mean of its divisors is an integer number (26383255405125).

Almost surely, 2^{102015254233121} is an apocalyptic number.

It is an amenable number.

102015254233121 is a deficient number, since it is larger than the sum of its proper divisors (3517767387379).

102015254233121 is an equidigital number, since it uses as much as digits as its factorization.

102015254233121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517767387378.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 102015254233121 in words is "one hundred two trillion, fifteen billion, two hundred fifty-four million, two hundred thirty-three thousand, one hundred twenty-one".