1213223132 has 24 divisors (see below), whose sum is σ = 2317132272. Its totient is φ = 551232000.

The previous prime is 1213223117. The next prime is 1213223147. The reversal of 1213223132 is 2313223121.

It is an interprime number because it is at equal distance from previous prime (1213223117) and next prime (1213223147).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141068 + ... + 149420.

It is an arithmetic number, because the mean of its divisors is an integer number (96547178).

Almost surely, 2^1213223132 is an apocalyptic number.

It is an amenable number.

1213223132 is a deficient number, since it is larger than the sum of its proper divisors (1103909140).

1213223132 is a wasteful number, since it uses less digits than its factorization.

1213223132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11669 (or 11667 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1213223132 is about 34831.3527156210. The cubic root of 1213223132 is about 1066.5475622655.

Adding to 1213223132 its reverse (2313223121), we get a palindrome (3526446253).

The spelling of 1213223132 in words is "one billion, two hundred thirteen million, two hundred twenty-three thousand, one hundred thirty-two".