12212200111121 has 4 divisors (see below), whose sum is σ = 12496204764912. Its totient is φ = 11928195457332.

The previous prime is 12212200111117. The next prime is 12212200111141. The reversal of 12212200111121 is 12111100221221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12212200111121 - 2² = 12212200111117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12212200111121.

It is not an unprimeable number, because it can be changed into a prime (12212200111141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142002326831 + ... + 142002326916.

It is an arithmetic number, because the mean of its divisors is an integer number (3124051191228).

Almost surely, 2^{12212200111121} is an apocalyptic number.

It is an amenable number.

12212200111121 is a deficient number, since it is larger than the sum of its proper divisors (284004653791).

12212200111121 is an equidigital number, since it uses as much as digits as its factorization.

12212200111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284004653790.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12212200111121 its reverse (12111100221221), we get a palindrome (24323300332342).

The spelling of 12212200111121 in words is "twelve trillion, two hundred twelve billion, two hundred million, one hundred eleven thousand, one hundred twenty-one".