22222144021 has 32 divisors (see below), whose sum is σ = 28371898368. Its totient is φ = 16900107840.

The previous prime is 22222144001. The next prime is 22222144027. The reversal of 22222144021 is 12044122222.

It is not a de Polignac number, because 22222144021 - 2⁵ = 22222143989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22222143983 and 22222144001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222144027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7590660 + ... + 7593586.

It is an arithmetic number, because the mean of its divisors is an integer number (886621824).

Almost surely, 2^22222144021 is an apocalyptic number.

It is an amenable number.

22222144021 is a deficient number, since it is larger than the sum of its proper divisors (6149754347).

22222144021 is a wasteful number, since it uses less digits than its factorization.

22222144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5281.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22222144021 its reverse (12044122222), we get a palindrome (34266266243).

The spelling of 22222144021 in words is "twenty-two billion, two hundred twenty-two million, one hundred forty-four thousand, twenty-one".