213220132 has 24 divisors (see below), whose sum is σ = 382779320. Its totient is φ = 103887360.

The previous prime is 213220127. The next prime is 213220177. The reversal of 213220132 is 231022312.

It can be written as a sum of positive squares in 4 ways, for example, as 11182336 + 202037796 = 3344^2 + 14214^2 .

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, 22588 + ... + 30604.

Almost surely, 2^213220132 is an apocalyptic number.

It is an amenable number.

213220132 is a deficient number, since it is larger than the sum of its proper divisors (169559188).

213220132 is a wasteful number, since it uses less digits than its factorization.

213220132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8191 (or 8189 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213220132 is about 14602.0591698568. The cubic root of 213220132 is about 597.4149264683.

Adding to 213220132 its reverse (231022312), we get a palindrome (444242444).

The spelling of 213220132 in words is "two hundred thirteen million, two hundred twenty thousand, one hundred thirty-two".