121413423323444 has 24 divisors (see below), whose sum is σ = 242828019712320. Its totient is φ = 52034072910336.

The previous prime is 121413423323443. The next prime is 121413423323503. The reversal of 121413423323444 is 444323324314121.

It is a super-2 number, since 2×121413423323444² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121413423323443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4514762 + ... + 16223745.

It is an arithmetic number, because the mean of its divisors is an integer number (10117834154680).

Almost surely, 2^{121413423323444} is an apocalyptic number.

121413423323444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121413423323444 is an abundant number, since it is smaller than the sum of its proper divisors (121414596388876).

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

121413423323444 is a wasteful number, since it uses less digits than its factorization.

121413423323444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20947607 (or 20947605 counting only the distinct ones).

The product of its digits is 663552, while the sum is 41.

Adding to 121413423323444 its reverse (444323324314121), we get a palindrome (565736747637565).

The spelling of 121413423323444 in words is "one hundred twenty-one trillion, four hundred thirteen billion, four hundred twenty-three million, three hundred twenty-three thousand, four hundred forty-four".