122355440000 has 320 divisors, whose sum is σ = 324208407600. Its totient is φ = 45849600000.

The previous prime is 122355439963. The next prime is 122355440017. The reversal of 122355440000 is 44553221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 153519602 + ... + 153520398.

Almost surely, 2^122355440000 is an apocalyptic number.

122355440000 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 122355440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162104203800).

122355440000 is an abundant number, since it is smaller than the sum of its proper divisors (201852967600).

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

122355440000 is an equidigital number, since it uses as much as digits as its factorization.

122355440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 122355440000 its reverse (44553221), we get a palindrome (122399993221).

The spelling of 122355440000 in words is "one hundred twenty-two billion, three hundred fifty-five million, four hundred forty thousand".