12013122132 has 36 divisors (see below), whose sum is σ = 33127095456. Its totient is φ = 3640339920.

The previous prime is 12013122127. The next prime is 12013122133. The reversal of 12013122132 is 23122131021.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013122133) 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, 15167688 + ... + 15168479.

It is an arithmetic number, because the mean of its divisors is an integer number (920197096).

Almost surely, 2^12013122132 is an apocalyptic number.

12013122132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12013122132 is an abundant number, since it is smaller than the sum of its proper divisors (21113973324).

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

12013122132 is a wasteful number, since it uses less digits than its factorization.

12013122132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30336188 (or 30336183 counting only the distinct ones).

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

Adding to 12013122132 its reverse (23122131021), we get a palindrome (35135253153).

The spelling of 12013122132 in words is "twelve billion, thirteen million, one hundred twenty-two thousand, one hundred thirty-two".