12200121121012 has 24 divisors (see below), whose sum is σ = 24516989814240. Its totient is φ = 5253640673760.

The previous prime is 12200121120989. The next prime is 12200121121039. The reversal of 12200121121012 is 21012112100221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7296722323 + ... + 7296723994.

It is an arithmetic number, because the mean of its divisors is an integer number (1021541242260).

Almost surely, 2^{12200121121012} is an apocalyptic number.

It is an amenable number.

12200121121012 is an abundant number, since it is smaller than the sum of its proper divisors (12316868693228).

12200121121012 is a wasteful number, since it uses less digits than its factorization.

12200121121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14593446351 (or 14593446349 counting only the distinct ones).

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

Adding to 12200121121012 its reverse (21012112100221), we get a palindrome (33212233221233).

The spelling of 12200121121012 in words is "twelve trillion, two hundred billion, one hundred twenty-one million, one hundred twenty-one thousand, twelve".