22203682081 has 15 divisors (see below), whose sum is σ = 25911275123. Its totient is φ = 19025469120.

The previous prime is 22203682073. The next prime is 22203682153. The reversal of 22203682081 is 18028630222.

It is a happy number.

The square root of 22203682081 is 149009.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 21738848481 + 464833600 = 147441^2 + 21560^2 .

It is not a de Polignac number, because 22203682081 - 2³ = 22203682073 is a prime.

It is a super-2 number, since 2×22203682081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22203682681) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 7299921 + ... + 7302961.

Almost surely, 2^22203682081 is an apocalyptic number.

22203682081 is the 149009-th square number.

22203682081 is the 74505-th centered octagonal number.

It is an amenable number.

22203682081 is a deficient number, since it is larger than the sum of its proper divisors (3707593042).

22203682081 is an frugal number, since it uses more digits than its factorization.

22203682081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110 (or 3048 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 22203682081 in words is "twenty-two billion, two hundred three million, six hundred eighty-two thousand, eighty-one".