22203223021 has 16 divisors (see below), whose sum is σ = 25813866240. Its totient is φ = 18703964160.

The previous prime is 22203223019. The next prime is 22203223051. The reversal of 22203223021 is 12032230222.

It is not a de Polignac number, because 22203223021 - 2¹ = 22203223019 is a prime.

It is a super-2 number, since 2×22203223021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22203223021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22203223051) 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, 87085 + ... + 228013.

It is an arithmetic number, because the mean of its divisors is an integer number (1613366640).

Almost surely, 2^22203223021 is an apocalyptic number.

It is an amenable number.

22203223021 is a deficient number, since it is larger than the sum of its proper divisors (3610643219).

22203223021 is a wasteful number, since it uses less digits than its factorization.

22203223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141324.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 22203223021 its reverse (12032230222), we get a palindrome (34235453243).

The spelling of 22203223021 in words is "twenty-two billion, two hundred three million, two hundred twenty-three thousand, twenty-one".