1213132224 has 56 divisors (see below), whose sum is σ = 3215891968. Its totient is φ = 403603200.

The previous prime is 1213132183. The next prime is 1213132237. The reversal of 1213132224 is 4222313121.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1213132224.

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, 99249 + ... + 110799.

Almost surely, 2^1213132224 is an apocalyptic number.

It is an amenable number.

1213132224 is an abundant number, since it is smaller than the sum of its proper divisors (2002759744).

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

1213132224 is a wasteful number, since it uses less digits than its factorization.

1213132224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12113 (or 12103 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 1213132224 is about 34830.0477174522. The cubic root of 1213132224 is about 1066.5209224482.

Adding to 1213132224 its reverse (4222313121), we get a palindrome (5435445345).

The spelling of 1213132224 in words is "one billion, two hundred thirteen million, one hundred thirty-two thousand, two hundred twenty-four".