1213033212 has 24 divisors (see below), whose sum is σ = 3144901200. Its totient is φ = 404344368.

The previous prime is 1213033201. The next prime is 1213033219. The reversal of 1213033212 is 2123303121.

1213033212 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213033219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5615787 + ... + 5616002.

It is an arithmetic number, because the mean of its divisors is an integer number (131037550).

Almost surely, 2^1213033212 is an apocalyptic number.

1213033212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213033212 is an abundant number, since it is smaller than the sum of its proper divisors (1931867988).

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

1213033212 is a wasteful number, since it uses less digits than its factorization.

1213033212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11231802 (or 11231794 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1213033212 is about 34828.6263295009. The cubic root of 1213033212 is about 1066.4919063084.

Adding to 1213033212 its reverse (2123303121), we get a palindrome (3336336333).

The spelling of 1213033212 in words is "one billion, two hundred thirteen million, thirty-three thousand, two hundred twelve".