12123211332 has 24 divisors (see below), whose sum is σ = 28291134816. Its totient is φ = 4040550208.

The previous prime is 12123211327. The next prime is 12123211333. The reversal of 12123211332 is 23311232121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12123211299 and 12123211308.

It is not an unprimeable number, because it can be changed into a prime (12123211333) 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, 38683 + ... + 160445.

It is an arithmetic number, because the mean of its divisors is an integer number (1178797284).

Almost surely, 2^12123211332 is an apocalyptic number.

12123211332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12123211332 is an abundant number, since it is smaller than the sum of its proper divisors (16167923484).

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

12123211332 is a wasteful number, since it uses less digits than its factorization.

12123211332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130067 (or 130065 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 12123211332 its reverse (23311232121), we get a palindrome (35434443453).

The spelling of 12123211332 in words is "twelve billion, one hundred twenty-three million, two hundred eleven thousand, three hundred thirty-two".