221975096 has 48 divisors (see below), whose sum is σ = 492144840. Its totient is φ = 93562560.

The previous prime is 221975063. The next prime is 221975141. The reversal of 221975096 is 690579122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19271 + ... + 28553.

Almost surely, 2^221975096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221975096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246072420).

221975096 is an abundant number, since it is smaller than the sum of its proper divisors (270169744).

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

221975096 is a wasteful number, since it uses less digits than its factorization.

221975096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9364 (or 9353 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 221975096 is about 14898.8286787922. The cubic root of 221975096 is about 605.4822519217.

The spelling of 221975096 in words is "two hundred twenty-one million, nine hundred seventy-five thousand, ninety-six".