21002222182 has 16 divisors (see below), whose sum is σ = 32593946400. Its totient is φ = 10137668800.

The previous prime is 21002222159. The next prime is 21002222183. The reversal of 21002222182 is 28122220012.

It is a super-2 number, since 2×21002222182² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002222183) 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 7 ways as a sum of consecutive naturals, for example, 530682 + ... + 568882.

It is an arithmetic number, because the mean of its divisors is an integer number (2037121650).

Almost surely, 2^21002222182 is an apocalyptic number.

21002222182 is a deficient number, since it is larger than the sum of its proper divisors (11591724218).

21002222182 is a wasteful number, since it uses less digits than its factorization.

21002222182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47711.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21002222182 its reverse (28122220012), we get a palindrome (49124442194).

The spelling of 21002222182 in words is "twenty-one billion, two million, two hundred twenty-two thousand, one hundred eighty-two".