221434032 has 20 divisors (see below), whose sum is σ = 572038040. Its totient is φ = 73811328.

The previous prime is 221434007. The next prime is 221434049. The reversal of 221434032 is 230434122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2306557 + ... + 2306652.

It is an arithmetic number, because the mean of its divisors is an integer number (28601902).

Almost surely, 2^221434032 is an apocalyptic number.

It is an amenable number.

221434032 is an abundant number, since it is smaller than the sum of its proper divisors (350604008).

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

221434032 is a wasteful number, since it uses less digits than its factorization.

221434032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4613220 (or 4613214 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 221434032 is about 14880.6596627972. The cubic root of 221434032 is about 604.9898976070.

Adding to 221434032 its reverse (230434122), we get a palindrome (451868154).

The spelling of 221434032 in words is "two hundred twenty-one million, four hundred thirty-four thousand, thirty-two".