12121022012 has 24 divisors (see below), whose sum is σ = 23159727360. Its totient is φ = 5504890160.

The previous prime is 12121021999. The next prime is 12121022021. The reversal of 12121022012 is 21022012121.

12121022012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63812 + ... + 168267.

It is an arithmetic number, because the mean of its divisors is an integer number (964988640).

Almost surely, 2^12121022012 is an apocalyptic number.

It is an amenable number.

12121022012 is a deficient number, since it is larger than the sum of its proper divisors (11038705348).

12121022012 is a wasteful number, since it uses less digits than its factorization.

12121022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233281 (or 233279 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12121022012 its reverse (21022012121), we get a palindrome (33143034133).

It can be divided in two parts, 121 and 21022012, that multiplied together give a palindrome (2543663452).

The spelling of 12121022012 in words is "twelve billion, one hundred twenty-one million, twenty-two thousand, twelve".