22222143240 has 64 divisors (see below), whose sum is σ = 72727018560. Its totient is φ = 5387185920.

The previous prime is 22222143239. The next prime is 22222143241. The reversal of 22222143240 is 4234122222.

It is an interprime number because it is at equal distance from previous prime (22222143239) and next prime (22222143241).

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 22222143240.

It is not an unprimeable number, because it can be changed into a prime (22222143241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8416159 + ... + 8418798.

It is an arithmetic number, because the mean of its divisors is an integer number (1136359665).

Almost surely, 2^22222143240 is an apocalyptic number.

22222143240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222143240 is an abundant number, since it is smaller than the sum of its proper divisors (50504875320).

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

22222143240 is a wasteful number, since it uses less digits than its factorization.

22222143240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16834982 (or 16834978 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 22222143240 its reverse (4234122222), we get a palindrome (26456265462).

The spelling of 22222143240 in words is "twenty-two billion, two hundred twenty-two million, one hundred forty-three thousand, two hundred forty".