12122622121 has 4 divisors (see below), whose sum is σ = 12649692672. Its totient is φ = 11595551572.

The previous prime is 12122622103. The next prime is 12122622139.

12122622121 is nontrivially palindromic in base 10.

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 an interprime number because it is at equal distance from previous prime (12122622103) and next prime (12122622139).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122622121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122622092 and 12122622101.

It is not an unprimeable number, because it can be changed into a prime (12122622181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263535241 + ... + 263535286.

It is an arithmetic number, because the mean of its divisors is an integer number (3162423168).

Almost surely, 2^12122622121 is an apocalyptic number.

It is an amenable number.

12122622121 is a deficient number, since it is larger than the sum of its proper divisors (527070551).

12122622121 is an equidigital number, since it uses as much as digits as its factorization.

12122622121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527070550.

The product of its digits is 384, while the sum is 22.

The spelling of 12122622121 in words is "twelve billion, one hundred twenty-two million, six hundred twenty-two thousand, one hundred twenty-one".