12100122001221 has 16 divisors (see below), whose sum is σ = 16692918816960. Its totient is φ = 7787139772160.

The previous prime is 12100122001217. The next prime is 12100122001223. The reversal of 12100122001221 is 12210022100121.

12100122001221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12100122001221 - 2² = 12100122001217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12100122001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100122001223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12425475 + ... + 13363856.

It is an arithmetic number, because the mean of its divisors is an integer number (1043307426060).

Almost surely, 2^{12100122001221} is an apocalyptic number.

It is an amenable number.

12100122001221 is a deficient number, since it is larger than the sum of its proper divisors (4592796815739).

12100122001221 is a wasteful number, since it uses less digits than its factorization.

12100122001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25794756.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12100122001221 its reverse (12210022100121), we get a palindrome (24310144101342).

The spelling of 12100122001221 in words is "twelve trillion, one hundred billion, one hundred twenty-two million, one thousand, two hundred twenty-one".