12121021232 has 20 divisors (see below), whose sum is σ = 23500753296. Its totient is φ = 6056310720.

The previous prime is 12121021201. The next prime is 12121021261. The reversal of 12121021232 is 23212012121.

It is a self number, because there is not a number n which added to its sum of digits gives 12121021232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238619 + ... + 284922.

Almost surely, 2^12121021232 is an apocalyptic number.

It is an amenable number.

12121021232 is a deficient number, since it is larger than the sum of its proper divisors (11379732064).

12121021232 is a wasteful number, since it uses less digits than its factorization.

12121021232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524996 (or 524990 counting only the distinct ones).

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

Adding to 12121021232 its reverse (23212012121), we get a palindrome (35333033353).

The spelling of 12121021232 in words is "twelve billion, one hundred twenty-one million, twenty-one thousand, two hundred thirty-two".