22140022340 has 12 divisors (see below), whose sum is σ = 46494046956. Its totient is φ = 8856008928.

The previous prime is 22140022291. The next prime is 22140022361. The reversal of 22140022340 is 4322004122.

It can be written as a sum of positive squares in 2 ways, for example, as 15638502916 + 6501519424 = 125054^2 + 80632^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1107001117 = 22140022340 / (2 + 2 + 1 + 4 + 0 + 0 + 2 + 2 + 3 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553500539 + ... + 553500578.

It is an arithmetic number, because the mean of its divisors is an integer number (3874503913).

Almost surely, 2^22140022340 is an apocalyptic number.

22140022340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22140022340 is an abundant number, since it is smaller than the sum of its proper divisors (24354024616).

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

22140022340 is a wasteful number, since it uses less digits than its factorization.

22140022340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107001126 (or 1107001124 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 22140022340 its reverse (4322004122), we get a palindrome (26462026462).

The spelling of 22140022340 in words is "twenty-two billion, one hundred forty million, twenty-two thousand, three hundred forty".