22044004002 has 24 divisors (see below), whose sum is σ = 47892164736. Its totient is φ = 7327977336.

The previous prime is 22044003991. The next prime is 22044004007. The reversal of 22044004002 is 20040044022.

22044004002 is a `hidden beast` number, since 220 + 4 + 40 + 0 + 400 + 2 = 666.

It is a super-2 number, since 2×22044004002² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22044004007) 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 11 ways as a sum of consecutive naturals, for example, 1661878 + ... + 1675089.

It is an arithmetic number, because the mean of its divisors is an integer number (1995506864).

Almost surely, 2^22044004002 is an apocalyptic number.

22044004002 is an abundant number, since it is smaller than the sum of its proper divisors (25848160734).

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

22044004002 is a wasteful number, since it uses less digits than its factorization.

22044004002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337342 (or 3337339 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22044004002 its reverse (20040044022), we get a palindrome (42084048024).

The spelling of 22044004002 in words is "twenty-two billion, forty-four million, four thousand, two".