21045332200233 has 32 divisors (see below), whose sum is σ = 31034608352640. Its totient is φ = 12578450480640.

The previous prime is 21045332200199. The next prime is 21045332200241. The reversal of 21045332200233 is 33200223354012.

It is a happy number.

It is not a de Polignac number, because 21045332200233 - 2⁹ = 21045332199721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21045332200233.

It is not an unprimeable number, because it can be changed into a prime (21045332200273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18857263 + ... + 19942091.

It is an arithmetic number, because the mean of its divisors is an integer number (969831511020).

Almost surely, 2^{21045332200233} is an apocalyptic number.

It is an amenable number.

21045332200233 is a deficient number, since it is larger than the sum of its proper divisors (9989276152407).

21045332200233 is a wasteful number, since it uses less digits than its factorization.

21045332200233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092969.

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 21045332200233 its reverse (33200223354012), we get a palindrome (54245555554245).

The spelling of 21045332200233 in words is "twenty-one trillion, forty-five billion, three hundred thirty-two million, two hundred thousand, two hundred thirty-three".