12122422422121 has 4 divisors (see below), whose sum is σ = 13224460824144. Its totient is φ = 11020384020100.

The previous prime is 12122422422119. The next prime is 12122422422127.

It is a happy number.

12122422422121 is nontrivially palindromic in base 10.

12122422422121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12122422422121 - 2¹ = 12122422422119 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 12122422422121.

It is not an unprimeable number, because it can be changed into a prime (12122422422127) 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, 551019200995 + ... + 551019201016.

It is an arithmetic number, because the mean of its divisors is an integer number (3306115206036).

Almost surely, 2^{12122422422121} is an apocalyptic number.

12122422422121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12122422422121 is a deficient number, since it is larger than the sum of its proper divisors (1102038402023).

12122422422121 is a wasteful number, since it uses less digits than its factorization.

12122422422121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102038402022.

The product of its digits is 4096, while the sum is 28.

It can be divided in two parts, 1212242 and 2422121, that added together give a palindrome (3634363).

The spelling of 12122422422121 in words is "twelve trillion, one hundred twenty-two billion, four hundred twenty-two million, four hundred twenty-two thousand, one hundred twenty-one".