12222100121 has 8 divisors (see below), whose sum is σ = 15237943104. Its totient is φ = 9523714320.

The previous prime is 12222100109. The next prime is 12222100133. The reversal of 12222100121 is 12100122221.

It is an interprime number because it is at equal distance from previous prime (12222100109) and next prime (12222100133).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12222100121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222100096 and 12222100105.

It is not an unprimeable number, because it can be changed into a prime (12222100321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79364210 + ... + 79364363.

It is an arithmetic number, because the mean of its divisors is an integer number (1904742888).

Almost surely, 2^12222100121 is an apocalyptic number.

12222100121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12222100121 is a deficient number, since it is larger than the sum of its proper divisors (3015842983).

12222100121 is a wasteful number, since it uses less digits than its factorization.

12222100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158728591.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12222100121 its reverse (12100122221), we get a palindrome (24322222342).

It can be divided in two parts, 12222100 and 121, that added together give a palindrome (12222221).

The spelling of 12222100121 in words is "twelve billion, two hundred twenty-two million, one hundred thousand, one hundred twenty-one".