21233000431321 has 16 divisors (see below), whose sum is σ = 24330017894400. Its totient is φ = 18151946147088.

The previous prime is 21233000431303. The next prime is 21233000431381. The reversal of 21233000431321 is 12313400033212.

It is a cyclic number.

It is not a de Polignac number, because 21233000431321 - 2⁵ = 21233000431289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21233000431381) 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, 7172490 + ... + 9690748.

It is an arithmetic number, because the mean of its divisors is an integer number (1520626118400).

Almost surely, 2^{21233000431321} is an apocalyptic number.

It is an amenable number.

21233000431321 is a deficient number, since it is larger than the sum of its proper divisors (3097017463079).

21233000431321 is a wasteful number, since it uses less digits than its factorization.

21233000431321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521428.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21233000431321 its reverse (12313400033212), we get a palindrome (33546400464533).

The spelling of 21233000431321 in words is "twenty-one trillion, two hundred thirty-three billion, four hundred thirty-one thousand, three hundred twenty-one".