12122306541421 has 16 divisors (see below), whose sum is σ = 13025741414400. Its totient is φ = 11247555942000.

The previous prime is 12122306541313. The next prime is 12122306541461. The reversal of 12122306541421 is 12414560322121.

It is a cyclic number.

It is not a de Polignac number, because 12122306541421 - 2¹⁷ = 12122306410349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122306541461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29551741 + ... + 29959138.

It is an arithmetic number, because the mean of its divisors is an integer number (814108838400).

Almost surely, 2^{12122306541421} is an apocalyptic number.

It is an amenable number.

12122306541421 is a deficient number, since it is larger than the sum of its proper divisors (903434872979).

12122306541421 is a wasteful number, since it uses less digits than its factorization.

12122306541421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59511120.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 12122306541421 its reverse (12414560322121), we get a palindrome (24536866863542).

The spelling of 12122306541421 in words is "twelve trillion, one hundred twenty-two billion, three hundred six million, five hundred forty-one thousand, four hundred twenty-one".