22121303400233 has 2 divisors, whose sum is σ = 22121303400234. Its totient is φ = 22121303400232.

The previous prime is 22121303400187. The next prime is 22121303400319. The reversal of 22121303400233 is 33200430312122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17598931131664 + 4522372268569 = 4195108^2 + 2126587^2 .

It is a cyclic number.

It is not a de Polignac number, because 22121303400233 - 2²⁶ = 22121236291369 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121303403233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060651700116 + 11060651700117.

It is an arithmetic number, because the mean of its divisors is an integer number (11060651700117).

Almost surely, 2^{22121303400233} is an apocalyptic number.

It is an amenable number.

22121303400233 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121303400233 is an equidigital number, since it uses as much as digits as its factorization.

22121303400233 is an evil number, because the sum of its binary digits is even.

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

Adding to 22121303400233 its reverse (33200430312122), we get a palindrome (55321733712355).

The spelling of 22121303400233 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred three million, four hundred thousand, two hundred thirty-three".