22115310444 has 36 divisors (see below), whose sum is σ = 57973059144. Its totient is φ = 7371769824.

The previous prime is 22115310407. The next prime is 22115310457. The reversal of 22115310444 is 44401351122.

22115310444 is a `hidden beast` number, since 2 + 211 + 5 + 3 + 1 + 0 + 444 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11375217 + ... + 11377160.

It is an arithmetic number, because the mean of its divisors is an integer number (1610362754).

Almost surely, 2^22115310444 is an apocalyptic number.

It is an amenable number.

22115310444 is an abundant number, since it is smaller than the sum of its proper divisors (35857748700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22115310444 is a wasteful number, since it uses less digits than its factorization.

22115310444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22752396 (or 22752382 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 22115310444 its reverse (44401351122), we get a palindrome (66516661566).

The spelling of 22115310444 in words is "twenty-two billion, one hundred fifteen million, three hundred ten thousand, four hundred forty-four".