22421131440 has 80 divisors (see below), whose sum is σ = 69521883648. Its totient is φ = 5977559808.

The previous prime is 22421131433. The next prime is 22421131457. The reversal of 22421131440 is 4413112422.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22421131440.

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, 1370187 + ... + 1386453.

Almost surely, 2^22421131440 is an apocalyptic number.

22421131440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22421131440 is an abundant number, since it is smaller than the sum of its proper divisors (47100752208).

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

22421131440 is a wasteful number, since it uses less digits than its factorization.

22421131440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22026 (or 22020 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 22421131440 its reverse (4413112422), we get a palindrome (26834243862).

The spelling of 22421131440 in words is "twenty-two billion, four hundred twenty-one million, one hundred thirty-one thousand, four hundred forty".