21223102230233 has 12 divisors (see below), whose sum is σ = 22585432204332. Its totient is φ = 19938823107840.

The previous prime is 21223102230157. The next prime is 21223102230251. The reversal of 21223102230233 is 33203220132212.

It can be written as a sum of positive squares in 6 ways, for example, as 1004158313929 + 20218943916304 = 1002077^2 + 4496548^2 .

It is not a de Polignac number, because 21223102230233 - 2¹⁴ = 21223102213849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21223102230263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65760338 + ... + 66082283.

It is an arithmetic number, because the mean of its divisors is an integer number (1882119350361).

Almost surely, 2^{21223102230233} is an apocalyptic number.

It is an amenable number.

21223102230233 is a deficient number, since it is larger than the sum of its proper divisors (1362329974099).

21223102230233 is a wasteful number, since it uses less digits than its factorization.

21223102230233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131843212 (or 131843195 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21223102230233 its reverse (33203220132212), we get a palindrome (54426322362445).

The spelling of 21223102230233 in words is "twenty-one trillion, two hundred twenty-three billion, one hundred two million, two hundred thirty thousand, two hundred thirty-three".