22204402081 has 4 divisors (see below), whose sum is σ = 22328449200. Its totient is φ = 22080354964.

The previous prime is 22204402067. The next prime is 22204402091. The reversal of 22204402081 is 18020440222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18020440222 = 2 ⋅9010220111.

It is a cyclic number.

It is not a de Polignac number, because 22204402081 - 2⁷ = 22204401953 is a prime.

It is a super-2 number, since 2×22204402081² (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 (22204402061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62023291 + ... + 62023648.

It is an arithmetic number, because the mean of its divisors is an integer number (5582112300).

Almost surely, 2^22204402081 is an apocalyptic number.

It is an amenable number.

22204402081 is a deficient number, since it is larger than the sum of its proper divisors (124047119).

22204402081 is a wasteful number, since it uses less digits than its factorization.

22204402081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124047118.

The product of its (nonzero) digits is 2048, while the sum is 25.

The spelling of 22204402081 in words is "twenty-two billion, two hundred four million, four hundred two thousand, eighty-one".