221093156 has 12 divisors (see below), whose sum is σ = 396350220. Its totient is φ = 107850240.

The previous prime is 221093153. The next prime is 221093161. The reversal of 221093156 is 651390122.

221093156 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 2 ways, for example, as 107329600 + 113763556 = 10360^2 + 10666^2 .

It is not an unprimeable number, because it can be changed into a prime (221093153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673901 + ... + 674228.

It is an arithmetic number, because the mean of its divisors is an integer number (33029185).

Almost surely, 2^221093156 is an apocalyptic number.

It is an amenable number.

221093156 is a deficient number, since it is larger than the sum of its proper divisors (175257064).

221093156 is a wasteful number, since it uses less digits than its factorization.

221093156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348174 (or 1348172 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 221093156 is about 14869.2015925536. The cubic root of 221093156 is about 604.6792972792.

The spelling of 221093156 in words is "two hundred twenty-one million, ninety-three thousand, one hundred fifty-six".