22442040021 has 16 divisors (see below), whose sum is σ = 30961359360. Its totient is φ = 14442267840.

The previous prime is 22442040013. The next prime is 22442040031. The reversal of 22442040021 is 12004024422.

It is not a de Polignac number, because 22442040021 - 2³ = 22442040013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22442040021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22442040031) 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 15 ways as a sum of consecutive naturals, for example, 406716 + ... + 458586.

It is an arithmetic number, because the mean of its divisors is an integer number (1935084960).

Almost surely, 2^22442040021 is an apocalyptic number.

It is an amenable number.

22442040021 is a deficient number, since it is larger than the sum of its proper divisors (8519319339).

22442040021 is a wasteful number, since it uses less digits than its factorization.

22442040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56876.

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 22442040021 its reverse (12004024422), we get a palindrome (34446064443).

The spelling of 22442040021 in words is "twenty-two billion, four hundred forty-two million, forty thousand, twenty-one".