22232313021 has 8 divisors (see below), whose sum is σ = 29644129440. Its totient is φ = 14821019312.

The previous prime is 22232313001. The next prime is 22232313043. The reversal of 22232313021 is 12031323222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22232313021 is a prime.

It is a super-2 number, since 2×22232313021² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22232313001) 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, 17406 + ... + 211583.

It is an arithmetic number, because the mean of its divisors is an integer number (3705516180).

Almost surely, 2^22232313021 is an apocalyptic number.

It is an amenable number.

22232313021 is a deficient number, since it is larger than the sum of its proper divisors (7411816419).

22232313021 is a wasteful number, since it uses less digits than its factorization.

22232313021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261355.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22232313021 its reverse (12031323222), we get a palindrome (34263636243).

The spelling of 22232313021 in words is "twenty-two billion, two hundred thirty-two million, three hundred thirteen thousand, twenty-one".