12121100122012 has 12 divisors (see below), whose sum is σ = 24242200244080. Its totient is φ = 5194757195136.

The previous prime is 12121100121937. The next prime is 12121100122031. The reversal of 12121100122012 is 21022100112121.

12121100122012 is an admirable number.

It is a congruent number.

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, 216448216437 + ... + 216448216492.

Almost surely, 2^{12121100122012} is an apocalyptic number.

It is an amenable number.

12121100122012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12121100122012 is a wasteful number, since it uses less digits than its factorization.

12121100122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432896432940 (or 432896432938 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12121100122012 its reverse (21022100112121), we get a palindrome (33143200234133).

The spelling of 12121100122012 in words is "twelve trillion, one hundred twenty-one billion, one hundred million, one hundred twenty-two thousand, twelve".