21120024022 has 64 divisors (see below), whose sum is σ = 34125815808. Its totient is φ = 9781200000.

The previous prime is 21120023987. The next prime is 21120024067. The reversal of 21120024022 is 22042002112.

It is a junction number, because it is equal to n+sod(n) for n = 21120023987 and 21120024005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84143397 + ... + 84143647.

It is an arithmetic number, because the mean of its divisors is an integer number (533215872).

Almost surely, 2^21120024022 is an apocalyptic number.

21120024022 is a deficient number, since it is larger than the sum of its proper divisors (13005791786).

21120024022 is a wasteful number, since it uses less digits than its factorization.

21120024022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21120024022 its reverse (22042002112), we get a palindrome (43162026134).

The spelling of 21120024022 in words is "twenty-one billion, one hundred twenty million, twenty-four thousand, twenty-two".