22155440115 has 16 divisors (see below), whose sum is σ = 36989952768. Its totient is φ = 11302485216.

The previous prime is 22155440089. The next prime is 22155440129. The reversal of 22155440115 is 51104455122.

It is not a de Polignac number, because 22155440115 - 2⁶ = 22155440051 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32108989 + ... + 32109678.

It is an arithmetic number, because the mean of its divisors is an integer number (2311872048).

Almost surely, 2^22155440115 is an apocalyptic number.

22155440115 is a deficient number, since it is larger than the sum of its proper divisors (14834512653).

22155440115 is a wasteful number, since it uses less digits than its factorization.

22155440115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64218698.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 22155440115 its reverse (51104455122), we get a palindrome (73259895237).

The spelling of 22155440115 in words is "twenty-two billion, one hundred fifty-five million, four hundred forty thousand, one hundred fifteen".