122000331440 has 160 divisors (see below), whose sum is σ = 315323692992. Its totient is φ = 43610112000.

The previous prime is 122000331419. The next prime is 122000331457. The reversal of 122000331440 is 44133000221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5574920 + ... + 5596760.

Almost surely, 2^122000331440 is an apocalyptic number.

122000331440 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 122000331440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157661846496).

122000331440 is an abundant number, since it is smaller than the sum of its proper divisors (193323361552).

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

122000331440 is a wasteful number, since it uses less digits than its factorization.

122000331440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22039 (or 22033 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 122000331440 its reverse (44133000221), we get a palindrome (166133331661).

The spelling of 122000331440 in words is "one hundred twenty-two billion, three hundred thirty-one thousand, four hundred forty".