22122031440 has 80 divisors (see below), whose sum is σ = 70037445888. Its totient is φ = 5773690368.

The previous prime is 22122031423. The next prime is 22122031457. The reversal of 22122031440 is 4413022122.

It is an interprime number because it is at equal distance from previous prime (22122031423) and next prime (22122031457).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 969307 + ... + 991866.

Almost surely, 2^22122031440 is an apocalyptic number.

22122031440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122031440 is an abundant number, since it is smaller than the sum of its proper divisors (47915414448).

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

22122031440 is a wasteful number, since it uses less digits than its factorization.

22122031440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961236 (or 1961230 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22122031440 its reverse (4413022122), we get a palindrome (26535053562).

The spelling of 22122031440 in words is "twenty-two billion, one hundred twenty-two million, thirty-one thousand, four hundred forty".