12220110112121 has 4 divisors (see below), whose sum is σ = 12614307212544. Its totient is φ = 11825913011700.

The previous prime is 12220110112079. The next prime is 12220110112123. The reversal of 12220110112121 is 12121101102221.

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 12220110112121 - 2⁶ = 12220110112057 is a prime.

It is a super-2 number, since 2×12220110112121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12220110112121.

It is not an unprimeable number, because it can be changed into a prime (12220110112123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197098550165 + ... + 197098550226.

It is an arithmetic number, because the mean of its divisors is an integer number (3153576803136).

Almost surely, 2^{12220110112121} is an apocalyptic number.

It is an amenable number.

12220110112121 is a deficient number, since it is larger than the sum of its proper divisors (394197100423).

12220110112121 is an equidigital number, since it uses as much as digits as its factorization.

12220110112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394197100422.

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

Adding to 12220110112121 its reverse (12121101102221), we get a palindrome (24341211214342).

The spelling of 12220110112121 in words is "twelve trillion, two hundred twenty billion, one hundred ten million, one hundred twelve thousand, one hundred twenty-one".