2221111250 has 90 divisors (see below), whose sum is σ = 4404251907. Its totient is φ = 839790000.

The previous prime is 2221111241. The next prime is 2221111279. The reversal of 2221111250 is 521111222.

2221111250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 513520921 + 1707590329 = 22661^2 + 41323^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33325.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 51653729 + ... + 51653771.

Almost surely, 2^2221111250 is an apocalyptic number.

2221111250 is a deficient number, since it is larger than the sum of its proper divisors (2183140657).

2221111250 is an frugal number, since it uses more digits than its factorization.

2221111250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2221111250 is about 47128.6669660834. Note that the first 3 decimals coincide. The cubic root of 2221111250 is about 1304.7383786797.

Adding to 2221111250 its reverse (521111222), we get a palindrome (2742222472).

The spelling of 2221111250 in words is "two billion, two hundred twenty-one million, one hundred eleven thousand, two hundred fifty".