21155013362113 has 8 divisors (see below), whose sum is σ = 21605232424320. Its totient is φ = 20704798983120.

The previous prime is 21155013362059. The next prime is 21155013362117. The reversal of 21155013362113 is 31126331055112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21155013362113 - 2²⁵ = 21154979807681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21155013362117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8865543 + ... + 10995811.

It is an arithmetic number, because the mean of its divisors is an integer number (2700654053040).

Almost surely, 2^{21155013362113} is an apocalyptic number.

It is an amenable number.

21155013362113 is a deficient number, since it is larger than the sum of its proper divisors (450219062207).

21155013362113 is a wasteful number, since it uses less digits than its factorization.

21155013362113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341607.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 21155013362113 in words is "twenty-one trillion, one hundred fifty-five billion, thirteen million, three hundred sixty-two thousand, one hundred thirteen".