12021111332 has 24 divisors (see below), whose sum is σ = 22283070264. Its totient is φ = 5654794752.

The previous prime is 12021111293. The next prime is 12021111341. The reversal of 12021111332 is 23311112021.

It can be written as a sum of positive squares in 4 ways, for example, as 2335402276 + 9685709056 = 48326^2 + 98416^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 12021111332.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149018 + ... + 215054.

It is an arithmetic number, because the mean of its divisors is an integer number (928461261).

Almost surely, 2^12021111332 is an apocalyptic number.

It is an amenable number.

12021111332 is a deficient number, since it is larger than the sum of its proper divisors (10261958932).

12021111332 is a wasteful number, since it uses less digits than its factorization.

12021111332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68735 (or 68733 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12021111332 its reverse (23311112021), we get a palindrome (35332223353).

The spelling of 12021111332 in words is "twelve billion, twenty-one million, one hundred eleven thousand, three hundred thirty-two".