21331285822 has 16 divisors (see below), whose sum is σ = 39892275072. Its totient is φ = 8310890520.

The previous prime is 21331285813. The next prime is 21331285837. The reversal of 21331285822 is 22858213312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69257268 + ... + 69257575.

It is an arithmetic number, because the mean of its divisors is an integer number (2493267192).

Almost surely, 2^21331285822 is an apocalyptic number.

21331285822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21331285822 is a deficient number, since it is larger than the sum of its proper divisors (18560989250).

21331285822 is a wasteful number, since it uses less digits than its factorization.

21331285822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138514863.

The product of its digits is 46080, while the sum is 37.

The spelling of 21331285822 in words is "twenty-one billion, three hundred thirty-one million, two hundred eighty-five thousand, eight hundred twenty-two".