211220132 has 24 divisors (see below), whose sum is σ = 386433600. Its totient is φ = 100827936.

The previous prime is 211220123. The next prime is 211220153. The reversal of 211220132 is 231022112.

It is a happy number.

It is a super-2 number, since 2×211220132² = 89227888324194848, which contains 22 as substring.

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, 55094 + ... + 58802.

It is an arithmetic number, because the mean of its divisors is an integer number (16101400).

Almost surely, 2^211220132 is an apocalyptic number.

It is an amenable number.

211220132 is a deficient number, since it is larger than the sum of its proper divisors (175213468).

211220132 is a wasteful number, since it uses less digits than its factorization.

211220132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4355 (or 4353 counting only the distinct ones).

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

The square root of 211220132 is about 14533.4143269914. The cubic root of 211220132 is about 595.5411426974.

Adding to 211220132 its reverse (231022112), we get a palindrome (442242244).

The spelling of 211220132 in words is "two hundred eleven million, two hundred twenty thousand, one hundred thirty-two".