22251353233 has 4 divisors (see below), whose sum is σ = 22768826608. Its totient is φ = 21733879860.

The previous prime is 22251353213. The next prime is 22251353249. The reversal of 22251353233 is 33235315222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33235315222 = 2 ⋅16617657611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22251353233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22251353195 and 22251353204.

It is not an unprimeable number, because it can be changed into a prime (22251353213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258736623 + ... + 258736708.

It is an arithmetic number, because the mean of its divisors is an integer number (5692206652).

Almost surely, 2^22251353233 is an apocalyptic number.

It is an amenable number.

22251353233 is a deficient number, since it is larger than the sum of its proper divisors (517473375).

22251353233 is an equidigital number, since it uses as much as digits as its factorization.

22251353233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517473374.

The product of its digits is 32400, while the sum is 31.

Adding to 22251353233 its reverse (33235315222), we get a palindrome (55486668455).

The spelling of 22251353233 in words is "twenty-two billion, two hundred fifty-one million, three hundred fifty-three thousand, two hundred thirty-three".