221232194 has 16 divisors (see below), whose sum is σ = 336956928. Its totient is φ = 108918432.

The previous prime is 221232173. The next prime is 221232197. The reversal of 221232194 is 491232122.

It is not an unprimeable number, because it can be changed into a prime (221232197) 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, 140399 + ... + 141965.

It is an arithmetic number, because the mean of its divisors is an integer number (21059808).

Almost surely, 2^221232194 is an apocalyptic number.

221232194 is a deficient number, since it is larger than the sum of its proper divisors (115724734).

221232194 is a wasteful number, since it uses less digits than its factorization.

221232194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609.

The product of its digits is 1728, while the sum is 26.

The square root of 221232194 is about 14873.8762264583. The cubic root of 221232194 is about 604.8060248302.

The spelling of 221232194 in words is "two hundred twenty-one million, two hundred thirty-two thousand, one hundred ninety-four".