21012333104391 has 8 divisors (see below), whose sum is σ = 28016561589360. Its totient is φ = 14008163344512.

The previous prime is 21012333104377. The next prime is 21012333104401. The reversal of 21012333104391 is 19340133321012.

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

It is not a de Polignac number, because 21012333104391 - 2⁵ = 21012333104359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012333104591) 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, 13839490 + ... + 15282543.

It is an arithmetic number, because the mean of its divisors is an integer number (3502070198670).

Almost surely, 2^{21012333104391} is an apocalyptic number.

21012333104391 is a deficient number, since it is larger than the sum of its proper divisors (7004228484969).

21012333104391 is a wasteful number, since it uses less digits than its factorization.

21012333104391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29362545.

The product of its (nonzero) digits is 11664, while the sum is 33.

The spelling of 21012333104391 in words is "twenty-one trillion, twelve billion, three hundred thirty-three million, one hundred four thousand, three hundred ninety-one".