221992883 has 18 divisors (see below), whose sum is σ = 267498036. Its totient is φ = 183684144.

The previous prime is 221992877. The next prime is 221992921. The reversal of 221992883 is 388299122.

It is not a de Polignac number, because 221992883 - 2⁴ = 221992867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221992853) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 38516 + ... + 43902.

It is an arithmetic number, because the mean of its divisors is an integer number (14861002).

Almost surely, 2^221992883 is an apocalyptic number.

221992883 is a deficient number, since it is larger than the sum of its proper divisors (45505153).

221992883 is an equidigital number, since it uses as much as digits as its factorization.

221992883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5459 (or 5423 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 221992883 is about 14899.4255929549. The cubic root of 221992883 is about 605.4984240439.

The spelling of 221992883 in words is "two hundred twenty-one million, nine hundred ninety-two thousand, eight hundred eighty-three".