122621421152 has 96 divisors (see below), whose sum is σ = 261558259200. Its totient is φ = 56407104000.

The previous prime is 122621421119. The next prime is 122621421157. The reversal of 122621421152 is 251124126221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122621421157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2909027 + ... + 2950877.

It is an arithmetic number, because the mean of its divisors is an integer number (2724565200).

Almost surely, 2^122621421152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122621421152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130779129600).

122621421152 is an abundant number, since it is smaller than the sum of its proper divisors (138936838048).

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

122621421152 is a wasteful number, since it uses less digits than its factorization.

122621421152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42020 (or 42012 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

Adding to 122621421152 its reverse (251124126221), we get a palindrome (373745547373).

The spelling of 122621421152 in words is "one hundred twenty-two billion, six hundred twenty-one million, four hundred twenty-one thousand, one hundred fifty-two".