12021112232 has 8 divisors (see below), whose sum is σ = 22539585450. Its totient is φ = 6010556112.

The previous prime is 12021112231. The next prime is 12021112307. The reversal of 12021112232 is 23221112021.

It can be written as a sum of positive squares in only one way, i.e., 11945178436 + 75933796 = 109294^2 + 8714^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12021112232.

It is not an unprimeable number, because it can be changed into a prime (12021112231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 751319507 + ... + 751319522.

Almost surely, 2^12021112232 is an apocalyptic number.

It is an amenable number.

12021112232 is a deficient number, since it is larger than the sum of its proper divisors (10518473218).

12021112232 is a wasteful number, since it uses less digits than its factorization.

12021112232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502639035 (or 1502639031 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12021112232 its reverse (23221112021), we get a palindrome (35242224253).

The spelling of 12021112232 in words is "twelve billion, twenty-one million, one hundred twelve thousand, two hundred thirty-two".