22004002 has 4 divisors (see below), whose sum is σ = 33006006. Its totient is φ = 11002000.

The previous prime is 22003979. The next prime is 22004009. The reversal of 22004002 is 20040022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21818241 + 185761 = 4671^2 + 431^2 .

It is a super-2 number, since 2×22004002² = 968352208032008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22004002.

It is not an unprimeable number, because it can be changed into a prime (22004009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500999 + ... + 5501002.

Almost surely, 2^22004002 is an apocalyptic number.

22004002 is a deficient number, since it is larger than the sum of its proper divisors (11002004).

22004002 is a wasteful number, since it uses less digits than its factorization.

22004002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11002003.

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 22004002 is about 4690.8423550574. The cubic root of 22004002 is about 280.2209225830.

Adding to 22004002 its reverse (20040022), we get a palindrome (42044024).

It can be divided in two parts, 2 and 2004002, that multiplied together give a palindrome (4008004).

The spelling of 22004002 in words is "twenty-two million, four thousand, two".