2221111249 has 8 divisors (see below), whose sum is σ = 2590217600. Its totient is φ = 1903809348.

The previous prime is 2221111241. The next prime is 2221111279. The reversal of 2221111249 is 9421111222.

2221111249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2221111249 - 2³ = 2221111241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221111241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3237429 + ... + 3238114.

It is an arithmetic number, because the mean of its divisors is an integer number (323777200).

Almost surely, 2^2221111249 is an apocalyptic number.

It is an amenable number.

2221111249 is a deficient number, since it is larger than the sum of its proper divisors (369106351).

2221111249 is an frugal number, since it uses more digits than its factorization.

2221111249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475564 (or 6475550 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 2221111249 is about 47128.6669554741. Note that the first 3 decimals coincide. The cubic root of 2221111249 is about 1304.7383784839.

The spelling of 2221111249 in words is "two billion, two hundred twenty-one million, one hundred eleven thousand, two hundred forty-nine".