12213132012 has 36 divisors (see below), whose sum is σ = 30906054816. Its totient is φ = 4066564320.

The previous prime is 12213132011. The next prime is 12213132049. The reversal of 12213132012 is 21023131221.

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 not an unprimeable number, because it can be changed into a prime (12213132011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153403 + ... + 218994.

Almost surely, 2^12213132012 is an apocalyptic number.

12213132012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12213132012 is an abundant number, since it is smaller than the sum of its proper divisors (18692922804).

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

12213132012 is a wasteful number, since it uses less digits than its factorization.

12213132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373318 (or 373313 counting only the distinct ones).

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

Adding to 12213132012 its reverse (21023131221), we get a palindrome (33236263233).

The spelling of 12213132012 in words is "twelve billion, two hundred thirteen million, one hundred thirty-two thousand, twelve".