1213333132 has 12 divisors (see below), whose sum is σ = 2316363336. Its totient is φ = 551515040.

The previous prime is 1213333111. The next prime is 1213333139. The reversal of 1213333132 is 2313333121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1213333139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13787833 + ... + 13787920.

It is an arithmetic number, because the mean of its divisors is an integer number (193030278).

Almost surely, 2^1213333132 is an apocalyptic number.

It is an amenable number.

1213333132 is a deficient number, since it is larger than the sum of its proper divisors (1103030204).

1213333132 is a wasteful number, since it uses less digits than its factorization.

1213333132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27575768 (or 27575766 counting only the distinct ones).

The product of its digits is 972, while the sum is 22.

The square root of 1213333132 is about 34832.9317169830. The cubic root of 1213333132 is about 1066.5797950519.

Adding to 1213333132 its reverse (2313333121), we get a palindrome (3526666253).

The spelling of 1213333132 in words is "one billion, two hundred thirteen million, three hundred thirty-three thousand, one hundred thirty-two".