22023313221 has 64 divisors (see below), whose sum is σ = 39200426496. Its totient is φ = 10666598400.

The previous prime is 22023313217. The next prime is 22023313237. The reversal of 22023313221 is 12231332022.

It is a happy number.

It is not a de Polignac number, because 22023313221 - 2² = 22023313217 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22023313241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132411 + ... + 248151.

It is an arithmetic number, because the mean of its divisors is an integer number (612506664).

Almost surely, 2^22023313221 is an apocalyptic number.

22023313221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22023313221 is a deficient number, since it is larger than the sum of its proper divisors (17177113275).

22023313221 is a wasteful number, since it uses less digits than its factorization.

22023313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115822.

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

Adding to 22023313221 its reverse (12231332022), we get a palindrome (34254645243).

The spelling of 22023313221 in words is "twenty-two billion, twenty-three million, three hundred thirteen thousand, two hundred twenty-one".