12101313651525 has 54 divisors (see below), whose sum is σ = 25213539786162. Its totient is φ = 5532029092800.

The previous prime is 12101313651503. The next prime is 12101313651547. The reversal of 12101313651525 is 52515631310121.

12101313651525 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 1 + 3 + 136 + 515 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (12101313651503) and next prime (12101313651547).

It can be written as a sum of positive squares in 3 ways, for example, as 3410603755524 + 8690709896001 = 1846782^2 + 2948001^2 .

It is not a de Polignac number, because 12101313651525 - 2⁶ = 12101313651461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12101313651525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 548801386 + ... + 548823435.

Almost surely, 2^{12101313651525} is an apocalyptic number.

12101313651525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12101313651525 is an abundant number, since it is smaller than the sum of its proper divisors (13112226134637).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12101313651525 is a wasteful number, since it uses less digits than its factorization.

12101313651525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097624851 (or 1097624836 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

Adding to 12101313651525 its reverse (52515631310121), we get a palindrome (64616944961646).

The spelling of 12101313651525 in words is "twelve trillion, one hundred one billion, three hundred thirteen million, six hundred fifty-one thousand, five hundred twenty-five".