21113404022 has 8 divisors (see below), whose sum is σ = 31671055416. Its totient is φ = 10556385552.

The previous prime is 21113404009. The next prime is 21113404033. The reversal of 21113404022 is 22040431112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21113403985 and 21113404003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63488 + ... + 215075.

It is an arithmetic number, because the mean of its divisors is an integer number (3958881927).

Almost surely, 2^21113404022 is an apocalyptic number.

21113404022 is a deficient number, since it is larger than the sum of its proper divisors (10557651394).

21113404022 is a wasteful number, since it uses less digits than its factorization.

21113404022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316462.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21113404022 its reverse (22040431112), we get a palindrome (43153835134).

The spelling of 21113404022 in words is "twenty-one billion, one hundred thirteen million, four hundred four thousand, twenty-two".