12120220332 has 36 divisors (see below), whose sum is σ = 33422426856. Its totient is φ = 3672793920.

The previous prime is 12120220313. The next prime is 12120220349. The reversal of 12120220332 is 23302202121.

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 an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15302913 + ... + 15303704.

It is an arithmetic number, because the mean of its divisors is an integer number (928400746).

Almost surely, 2^12120220332 is an apocalyptic number.

12120220332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12120220332 is an abundant number, since it is smaller than the sum of its proper divisors (21302206524).

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

12120220332 is a wasteful number, since it uses less digits than its factorization.

12120220332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30606638 (or 30606633 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12120220332 its reverse (23302202121), we get a palindrome (35422422453).

The spelling of 12120220332 in words is "twelve billion, one hundred twenty million, two hundred twenty thousand, three hundred thirty-two".