12212201000121 has 64 divisors (see below), whose sum is σ = 18196011694080. Its totient is φ = 7240138214400.

The previous prime is 12212201000099. The next prime is 12212201000123. The reversal of 12212201000121 is 12100010221221.

It is not a de Polignac number, because 12212201000121 - 2¹⁵ = 12212200967353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12212201000121.

It is not an unprimeable number, because it can be changed into a prime (12212201000123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2001668971 + ... + 2001675071.

It is an arithmetic number, because the mean of its divisors is an integer number (284312682720).

Almost surely, 2^{12212201000121} is an apocalyptic number.

It is an amenable number.

12212201000121 is a deficient number, since it is larger than the sum of its proper divisors (5983810693959).

12212201000121 is a wasteful number, since it uses less digits than its factorization.

12212201000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11246.

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

Adding to 12212201000121 its reverse (12100010221221), we get a palindrome (24312211221342).

The spelling of 12212201000121 in words is "twelve trillion, two hundred twelve billion, two hundred one million, one hundred twenty-one", and thus it is an aban number.