221022132 has 24 divisors (see below), whose sum is σ = 518886816. Its totient is φ = 73221408.

The previous prime is 221022097. The next prime is 221022143. The reversal of 221022132 is 231220122.

It is a happy number.

221022132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54543 + ... + 58454.

It is an arithmetic number, because the mean of its divisors is an integer number (21620284).

Almost surely, 2^221022132 is an apocalyptic number.

It is an amenable number.

221022132 is an abundant number, since it is smaller than the sum of its proper divisors (297864684).

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

221022132 is a wasteful number, since it uses less digits than its factorization.

221022132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113167 (or 113165 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221022132 is about 14866.8131083968. The cubic root of 221022132 is about 604.6145412539.

Adding to 221022132 its reverse (231220122), we get a palindrome (452242254).

It can be divided in two parts, 2210221 and 32, that added together give a triangular number (2210253 = T₂₁₀₂).

The spelling of 221022132 in words is "two hundred twenty-one million, twenty-two thousand, one hundred thirty-two".