22140021432 has 32 divisors (see below), whose sum is σ = 55430196480. Its totient is φ = 7369321440.

The previous prime is 22140021419. The next prime is 22140021437. The reversal of 22140021432 is 23412004122.

It is a junction number, because it is equal to n+sod(n) for n = 22140021399 and 22140021408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140021437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650928 + ... + 684095.

It is an arithmetic number, because the mean of its divisors is an integer number (1732193640).

Almost surely, 2^22140021432 is an apocalyptic number.

It is an amenable number.

22140021432 is an abundant number, since it is smaller than the sum of its proper divisors (33290175048).

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

22140021432 is a wasteful number, since it uses less digits than its factorization.

22140021432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335723 (or 1335719 counting only the distinct ones).

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

Adding to 22140021432 its reverse (23412004122), we get a palindrome (45552025554).

The spelling of 22140021432 in words is "twenty-two billion, one hundred forty million, twenty-one thousand, four hundred thirty-two".