221273088 has 176 divisors, whose sum is σ = 660280320. Its totient is φ = 65470464.

The previous prime is 221273083. The next prime is 221273093. The reversal of 221273088 is 880372122.

It is an interprime number because it is at equal distance from previous prime (221273083) and next prime (221273093).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221273081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 992145 + ... + 992367.

Almost surely, 2^221273088 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 221273088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (330140160).

221273088 is an abundant number, since it is smaller than the sum of its proper divisors (439007232).

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

221273088 is a wasteful number, since it uses less digits than its factorization.

221273088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 221273088 is about 14875.2508550276. The cubic root of 221273088 is about 604.8432879629.

The spelling of 221273088 in words is "two hundred twenty-one million, two hundred seventy-three thousand, eighty-eight".