221032112 has 20 divisors (see below), whose sum is σ = 489428496. Its totient is φ = 94728000.

The previous prime is 221032109. The next prime is 221032121. The reversal of 221032112 is 211230122.

It is a happy number.

221032112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 986639 + ... + 986862.

Almost surely, 2^221032112 is an apocalyptic number.

It is an amenable number.

221032112 is an abundant number, since it is smaller than the sum of its proper divisors (268396384).

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

221032112 is a wasteful number, since it uses less digits than its factorization.

221032112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973516 (or 1973510 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 221032112 is about 14867.1487515260. The cubic root of 221032112 is about 604.6236413415.

Adding to 221032112 its reverse (211230122), we get a palindrome (432262234).

The spelling of 221032112 in words is "two hundred twenty-one million, thirty-two thousand, one hundred twelve".