221942232 has 48 divisors (see below), whose sum is σ = 603537480. Its totient is φ = 73680000.

The previous prime is 221942209. The next prime is 221942233. The reversal of 221942232 is 232249122.

221942232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×221942232³ (a number of 26 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 221942196 and 221942205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221942233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11932 + ... + 24212.

Almost surely, 2^221942232 is an apocalyptic number.

It is an amenable number.

221942232 is an abundant number, since it is smaller than the sum of its proper divisors (381595248).

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

221942232 is a wasteful number, since it uses less digits than its factorization.

221942232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12544 (or 12537 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 221942232 is about 14897.7257324734. The cubic root of 221942232 is about 605.4523693640.

The spelling of 221942232 in words is "two hundred twenty-one million, nine hundred forty-two thousand, two hundred thirty-two".