2132231220 has 72 divisors (see below), whose sum is σ = 7391739264. Its totient is φ = 487366848.

The previous prime is 2132231219. The next prime is 2132231237. The reversal of 2132231220 is 221322312.

2132231220 is a `hidden beast` number, since 213 + 2 + 231 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2132231193 and 2132231202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 844864 + ... + 847383.

Almost surely, 2^2132231220 is an apocalyptic number.

2132231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2132231220 is an abundant number, since it is smaller than the sum of its proper divisors (5259508044).

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

2132231220 is a wasteful number, since it uses less digits than its factorization.

2132231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692269 (or 1692264 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2132231220 is about 46176.0892670655. The cubic root of 2132231220 is about 1287.0974582207.

Adding to 2132231220 its reverse (221322312), we get a palindrome (2353553532).

The spelling of 2132231220 in words is "two billion, one hundred thirty-two million, two hundred thirty-one thousand, two hundred twenty".