22121554115 has 8 divisors (see below), whose sum is σ = 26699310288. Its totient is φ = 17594946400.

The previous prime is 22121554097. The next prime is 22121554127. The reversal of 22121554115 is 51145512122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22121554115 - 2¹⁸ = 22121291971 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12786161 + ... + 12787890.

It is an arithmetic number, because the mean of its divisors is an integer number (3337413786).

Almost surely, 2^22121554115 is an apocalyptic number.

22121554115 is a deficient number, since it is larger than the sum of its proper divisors (4577756173).

22121554115 is a wasteful number, since it uses less digits than its factorization.

22121554115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25574229.

The product of its digits is 4000, while the sum is 29.

The spelling of 22121554115 in words is "twenty-two billion, one hundred twenty-one million, five hundred fifty-four thousand, one hundred fifteen".