1213132212 has 36 divisors (see below), whose sum is σ = 3075823296. Its totient is φ = 403151760.

The previous prime is 1213132183. The next prime is 1213132237. The reversal of 1213132212 is 2122313121.

1213132212 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38988 + ... + 62819.

It is an arithmetic number, because the mean of its divisors is an integer number (85439536).

Almost surely, 2^1213132212 is an apocalyptic number.

1213132212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213132212 is an abundant number, since it is smaller than the sum of its proper divisors (1862691084).

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

1213132212 is a wasteful number, since it uses less digits than its factorization.

1213132212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102148 (or 102143 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1213132212 is about 34830.0475451872. The cubic root of 1213132212 is about 1066.5209189316.

Adding to 1213132212 its reverse (2122313121), we get a palindrome (3335445333).

The spelling of 1213132212 in words is "one billion, two hundred thirteen million, one hundred thirty-two thousand, two hundred twelve".