221193196 has 24 divisors (see below), whose sum is σ = 453178656. Its totient is φ = 92484480.

The previous prime is 221193173. The next prime is 221193209. The reversal of 221193196 is 691391122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95191 + ... + 97486.

It is an arithmetic number, because the mean of its divisors is an integer number (18882444).

Almost surely, 2^221193196 is an apocalyptic number.

It is an amenable number.

221193196 is an abundant number, since it is smaller than the sum of its proper divisors (231985460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221193196 is a wasteful number, since it uses less digits than its factorization.

221193196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192729 (or 192727 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 221193196 is about 14872.5652124978. The cubic root of 221193196 is about 604.7704850790.

The spelling of 221193196 in words is "two hundred twenty-one million, one hundred ninety-three thousand, one hundred ninety-six".