221223096 has 64 divisors (see below), whose sum is σ = 624960000. Its totient is φ = 72487008.

The previous prime is 221223083. The next prime is 221223103. The reversal of 221223096 is 690322122.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4065 + ... + 21423.

It is an arithmetic number, because the mean of its divisors is an integer number (9765000).

Almost surely, 2^221223096 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 221223096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312480000).

221223096 is an abundant number, since it is smaller than the sum of its proper divisors (403736904).

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

221223096 is a wasteful number, since it uses less digits than its factorization.

221223096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17433 (or 17423 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 221223096 is about 14873.5703850824. The cubic root of 221223096 is about 604.7977339925.

The spelling of 221223096 in words is "two hundred twenty-one million, two hundred twenty-three thousand, ninety-six".