122421215252320 has 96 divisors (see below), whose sum is σ = 290434223128896. Its totient is φ = 48762943488000.

The previous prime is 122421215252263. The next prime is 122421215252327. The reversal of 122421215252320 is 23252512124221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122421215252327) 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, 952252045 + ... + 952380595.

It is an arithmetic number, because the mean of its divisors is an integer number (3025356490926).

Almost surely, 2^{122421215252320} is an apocalyptic number.

122421215252320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122421215252320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145217111564448).

122421215252320 is an abundant number, since it is smaller than the sum of its proper divisors (168013007876576).

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

122421215252320 is a wasteful number, since it uses less digits than its factorization.

122421215252320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153504 (or 153496 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 122421215252320 its reverse (23252512124221), we get a palindrome (145673727376541).

The spelling of 122421215252320 in words is "one hundred twenty-two trillion, four hundred twenty-one billion, two hundred fifteen million, two hundred fifty-two thousand, three hundred twenty".