21888111122 has 8 divisors (see below), whose sum is σ = 32885209200. Its totient is φ = 10926374724.

The previous prime is 21888111121. The next prime is 21888111149. The reversal of 21888111122 is 22111188812.

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

It is not an unprimeable number, because it can be changed into a prime (21888111121) 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 in 3 ways as a sum of consecutive naturals, for example, 8838872 + ... + 8841347.

It is an arithmetic number, because the mean of its divisors is an integer number (4110651150).

Almost surely, 2^21888111122 is an apocalyptic number.

21888111122 is a deficient number, since it is larger than the sum of its proper divisors (10997098078).

21888111122 is a wasteful number, since it uses less digits than its factorization.

21888111122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17680840.

The product of its digits is 4096, while the sum is 35.

Adding to 21888111122 its reverse (22111188812), we get a palindrome (43999299934).

The spelling of 21888111122 in words is "twenty-one billion, eight hundred eighty-eight million, one hundred eleven thousand, one hundred twenty-two".