1213211324 has 24 divisors (see below), whose sum is σ = 2420934768. Its totient is φ = 527005440.

The previous prime is 1213211323. The next prime is 1213211327. The reversal of 1213211324 is 4231123121.

It is a junction number, because it is equal to n+sod(n) for n = 1213211296 and 1213211305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213211323) by changing a digit.

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, 685322 + ... + 687089.

It is an arithmetic number, because the mean of its divisors is an integer number (100872282).

Almost surely, 2^1213211324 is an apocalyptic number.

It is an amenable number.

1213211324 is a deficient number, since it is larger than the sum of its proper divisors (1207723444).

1213211324 is a wasteful number, since it uses less digits than its factorization.

1213211324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372445 (or 1372443 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 1213211324 is about 34831.1832127477. The cubic root of 1213211324 is about 1066.5441021066.

Adding to 1213211324 its reverse (4231123121), we get a palindrome (5444334445).

The spelling of 1213211324 in words is "one billion, two hundred thirteen million, two hundred eleven thousand, three hundred twenty-four".