22233210321 has 16 divisors (see below), whose sum is σ = 33902256128. Its totient is φ = 12696037200.

The previous prime is 22233210319. The next prime is 22233210331. The reversal of 22233210321 is 12301233222.

It is a happy number.

It is not a de Polignac number, because 22233210321 - 2¹ = 22233210319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22233210331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328975 + ... + 390756.

It is an arithmetic number, because the mean of its divisors is an integer number (2118891008).

Almost surely, 2^22233210321 is an apocalyptic number.

22233210321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22233210321 is a deficient number, since it is larger than the sum of its proper divisors (11669045807).

22233210321 is a wasteful number, since it uses less digits than its factorization.

22233210321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721212.

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

Adding to 22233210321 its reverse (12301233222), we get a palindrome (34534443543).

The spelling of 22233210321 in words is "twenty-two billion, two hundred thirty-three million, two hundred ten thousand, three hundred twenty-one".