2221555115 has 16 divisors (see below), whose sum is σ = 2878460928. Its totient is φ = 1636231296.

The previous prime is 2221555109. The next prime is 2221555123. The reversal of 2221555115 is 5115551222.

2221555115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2221555115 - 2⁴ = 2221555099 is a prime.

It is a Duffinian number.

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, 19724 + ... + 69513.

It is an arithmetic number, because the mean of its divisors is an integer number (179903808).

Almost surely, 2^2221555115 is an apocalyptic number.

2221555115 is a deficient number, since it is larger than the sum of its proper divisors (656905813).

2221555115 is a wasteful number, since it uses less digits than its factorization.

2221555115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89638.

The product of its digits is 5000, while the sum is 29.

The square root of 2221555115 is about 47133.3758073830. The cubic root of 2221555115 is about 1304.8252854968.

The spelling of 2221555115 in words is "two billion, two hundred twenty-one million, five hundred fifty-five thousand, one hundred fifteen".