7121315113361 has 4 divisors (see below), whose sum is σ = 7295005725924. Its totient is φ = 6947624500800.

The previous prime is 7121315113331. The next prime is 7121315113399. The reversal of 7121315113361 is 1633115131217.

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 355984062736 + 6765331050625 = 596644^2 + 2601025^2 .

It is a cyclic number.

It is not a de Polignac number, because 7121315113361 - 2³⁸ = 6846437206417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7121315113321) 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, 86845306220 + ... + 86845306301.

It is an arithmetic number, because the mean of its divisors is an integer number (1823751431481).

Almost surely, 2^{7121315113361} is an apocalyptic number.

It is an amenable number.

7121315113361 is a deficient number, since it is larger than the sum of its proper divisors (173690612563).

7121315113361 is a wasteful number, since it uses less digits than its factorization.

7121315113361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173690612562.

The product of its digits is 11340, while the sum is 35.

The spelling of 7121315113361 in words is "seven trillion, one hundred twenty-one billion, three hundred fifteen million, one hundred thirteen thousand, three hundred sixty-one".