22040244442 has 32 divisors (see below), whose sum is σ = 33627111120. Its totient is φ = 10833100800.

The previous prime is 22040244433. The next prime is 22040244449. The reversal of 22040244442 is 24444204022.

It can be written as a sum of positive squares in 8 ways, for example, as 20349307801 + 1690936641 = 142651^2 + 41121^2 .

It is a super-2 number, since 2×22040244442² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22040244442.

It is not an unprimeable number, because it can be changed into a prime (22040244449) 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, 23724234 + ... + 23725162.

Almost surely, 2^22040244442 is an apocalyptic number.

22040244442 is a deficient number, since it is larger than the sum of its proper divisors (11586866678).

22040244442 is a wasteful number, since it uses less digits than its factorization.

22040244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 22040244442 its reverse (24444204022), we get a palindrome (46484448464).

The spelling of 22040244442 in words is "twenty-two billion, forty million, two hundred forty-four thousand, four hundred forty-two".