122312001440 has 48 divisors (see below), whose sum is σ = 304170642720. Its totient is φ = 46349809920.

The previous prime is 122312001401. The next prime is 122312001443. The reversal of 122312001440 is 44100213221.

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

It is not an unprimeable number, because it can be changed into a prime (122312001443) 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, 20114066 + ... + 20120145.

It is an arithmetic number, because the mean of its divisors is an integer number (6336888390).

Almost surely, 2^122312001440 is an apocalyptic number.

122312001440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122312001440 is an abundant number, since it is smaller than the sum of its proper divisors (181858641280).

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

122312001440 is a wasteful number, since it uses less digits than its factorization.

122312001440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40234245 (or 40234237 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 122312001440 its reverse (44100213221), we get a palindrome (166412214661).

The spelling of 122312001440 in words is "one hundred twenty-two billion, three hundred twelve million, one thousand, four hundred forty".