22144021004 has 48 divisors (see below), whose sum is σ = 45606792000. Its totient is φ = 9403164288.

The previous prime is 22144020989. The next prime is 22144021013. The reversal of 22144021004 is 40012044122.

It is an unprimeable number.

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, 75512 + ... + 223584.

It is an arithmetic number, because the mean of its divisors is an integer number (950141500).

Almost surely, 2^22144021004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22144021004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22803396000).

22144021004 is an abundant number, since it is smaller than the sum of its proper divisors (23462770996).

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

22144021004 is a wasteful number, since it uses less digits than its factorization.

22144021004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148207 (or 148191 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22144021004 its reverse (40012044122), we get a palindrome (62156065126).

The spelling of 22144021004 in words is "twenty-two billion, one hundred forty-four million, twenty-one thousand, four".