12121422421422 has 16 divisors (see below), whose sum is σ = 24242878956240. Its totient is φ = 4040468454912.

The previous prime is 12121422421403. The next prime is 12121422421463. The reversal of 12121422421422 is 22412422412121.

It is a super-4 number, since 4×12121422421422⁴ (a number of 53 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12121422421422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7747854 + ... + 9179982.

It is an arithmetic number, because the mean of its divisors is an integer number (1515179934765).

Almost surely, 2^{12121422421422} is an apocalyptic number.

12121422421422 is an abundant number, since it is smaller than the sum of its proper divisors (12121456534818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121422421422 is a wasteful number, since it uses less digits than its factorization.

12121422421422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842787.

The product of its digits is 8192, while the sum is 30.

Adding to 12121422421422 its reverse (22412422412121), we get a palindrome (34533844833543).

The spelling of 12121422421422 in words is "twelve trillion, one hundred twenty-one billion, four hundred twenty-two million, four hundred twenty-one thousand, four hundred twenty-two".