21000012321233 has 8 divisors (see below), whose sum is σ = 22966234291296. Its totient is φ = 19043312008000.

The previous prime is 21000012321227. The next prime is 21000012321247. The reversal of 21000012321233 is 33212321000012.

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 21000012321233 - 2¹⁴ = 21000012304849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000012321133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2380409591 + ... + 2380418412.

It is an arithmetic number, because the mean of its divisors is an integer number (2870779286412).

Almost surely, 2^{21000012321233} is an apocalyptic number.

It is an amenable number.

21000012321233 is a deficient number, since it is larger than the sum of its proper divisors (1966221970063).

21000012321233 is a wasteful number, since it uses less digits than its factorization.

21000012321233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760828415.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21000012321233 its reverse (33212321000012), we get a palindrome (54212333321245).

The spelling of 21000012321233 in words is "twenty-one trillion, twelve million, three hundred twenty-one thousand, two hundred thirty-three".