2221152191 has 8 divisors (see below), whose sum is σ = 2258784000. Its totient is φ = 2183559840.

The previous prime is 2221152151. The next prime is 2221152209. The reversal of 2221152191 is 1912511222.

2221152191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2221152191 - 2²² = 2216957887 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2221152191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221152151) 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, 117410 + ... + 135008.

It is an arithmetic number, because the mean of its divisors is an integer number (282348000).

Almost surely, 2^2221152191 is an apocalyptic number.

2221152191 is a deficient number, since it is larger than the sum of its proper divisors (37631809).

2221152191 is a wasteful number, since it uses less digits than its factorization.

2221152191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19729.

The product of its digits is 720, while the sum is 26.

The square root of 2221152191 is about 47129.1013175511. The cubic root of 2221152191 is about 1304.7463952323.

The spelling of 2221152191 in words is "two billion, two hundred twenty-one million, one hundred fifty-two thousand, one hundred ninety-one".