221210196 has 24 divisors (see below), whose sum is σ = 516786144. Its totient is φ = 73646880.

The previous prime is 221210167. The next prime is 221210207. The reversal of 221210196 is 691012122.

It is a congruent number.

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, 570 + ... + 21041.

It is an arithmetic number, because the mean of its divisors is an integer number (21532756).

Almost surely, 2^221210196 is an apocalyptic number.

It is an amenable number.

221210196 is an abundant number, since it is smaller than the sum of its proper divisors (295575948).

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

221210196 is a wasteful number, since it uses less digits than its factorization.

221210196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22471 (or 22469 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 221210196 is about 14873.1367236370. The cubic root of 221210196 is about 604.7859780735.

The spelling of 221210196 in words is "two hundred twenty-one million, two hundred ten thousand, one hundred ninety-six".