3115251125221 has 4 divisors (see below), whose sum is σ = 3152784271392. Its totient is φ = 3077717979052.

The previous prime is 3115251125183. The next prime is 3115251125227. The reversal of 3115251125221 is 1225211525113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3115251125221 - 2³³ = 3106661190629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115251125227) 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, 18766572961 + ... + 18766573126.

It is an arithmetic number, because the mean of its divisors is an integer number (788196067848).

Almost surely, 2^{3115251125221} is an apocalyptic number.

It is an amenable number.

3115251125221 is a deficient number, since it is larger than the sum of its proper divisors (37533146171).

3115251125221 is an equidigital number, since it uses as much as digits as its factorization.

3115251125221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37533146170.

The product of its digits is 6000, while the sum is 31.

The spelling of 3115251125221 in words is "three trillion, one hundred fifteen billion, two hundred fifty-one million, one hundred twenty-five thousand, two hundred twenty-one".