13620020919121 has 16 divisors (see below), whose sum is σ = 14174570412288. Its totient is φ = 13079821406400.

The previous prime is 13620020919097. The next prime is 13620020919139. The reversal of 13620020919121 is 12191902002631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13620020919121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13620020919191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14819806 + ... + 15711991.

It is an arithmetic number, because the mean of its divisors is an integer number (885910650768).

Almost surely, 2^{13620020919121} is an apocalyptic number.

It is an amenable number.

13620020919121 is a deficient number, since it is larger than the sum of its proper divisors (554549493167).

13620020919121 is a wasteful number, since it uses less digits than its factorization.

13620020919121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30532032.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 13620020919121 in words is "thirteen trillion, six hundred twenty billion, twenty million, nine hundred nineteen thousand, one hundred twenty-one".