221100221158 has 16 divisors (see below), whose sum is σ = 337969228896. Its totient is φ = 108444568960.

The previous prime is 221100221077. The next prime is 221100221159. The reversal of 221100221158 is 851122001122.

It is a happy number.

It is a super-2 number, since 2×221100221158² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100221159) 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, 406110 + ... + 779182.

It is an arithmetic number, because the mean of its divisors is an integer number (21123076806).

Almost surely, 2^221100221158 is an apocalyptic number.

221100221158 is a deficient number, since it is larger than the sum of its proper divisors (116869007738).

221100221158 is a wasteful number, since it uses less digits than its factorization.

221100221158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378719.

The product of its (nonzero) digits is 640, while the sum is 25.

The spelling of 221100221158 in words is "two hundred twenty-one billion, one hundred million, two hundred twenty-one thousand, one hundred fifty-eight".