221434132 has 12 divisors (see below), whose sum is σ = 407905120. Its totient is φ = 104889816.

The previous prime is 221434099. The next prime is 221434193. The reversal of 221434132 is 231434122.

It is a congruent number.

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, 1456728 + ... + 1456879.

Almost surely, 2^221434132 is an apocalyptic number.

It is an amenable number.

221434132 is a deficient number, since it is larger than the sum of its proper divisors (186470988).

221434132 is a wasteful number, since it uses less digits than its factorization.

221434132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913630 (or 2913628 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 221434132 is about 14880.6630228629. The cubic root of 221434132 is about 604.9899886785.

Adding to 221434132 its reverse (231434122), we get a palindrome (452868254).

The spelling of 221434132 in words is "two hundred twenty-one million, four hundred thirty-four thousand, one hundred thirty-two".