221191150 has 12 divisors (see below), whose sum is σ = 411415632. Its totient is φ = 88476440.

The previous prime is 221191129. The next prime is 221191151. The reversal of 221191150 is 51191122.

221191150 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221191151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2211862 + ... + 2211961.

It is an arithmetic number, because the mean of its divisors is an integer number (34284636).

Almost surely, 2^221191150 is an apocalyptic number.

221191150 is a deficient number, since it is larger than the sum of its proper divisors (190224482).

221191150 is a wasteful number, since it uses less digits than its factorization.

221191150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423835 (or 4423830 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 221191150 is about 14872.4964279707. The cubic root of 221191150 is about 604.7686203981.

The spelling of 221191150 in words is "two hundred twenty-one million, one hundred ninety-one thousand, one hundred fifty".