21536343222 has 8 divisors (see below), whose sum is σ = 43072686456. Its totient is φ = 7178781072.

The previous prime is 21536343203. The next prime is 21536343259. The reversal of 21536343222 is 22234363512.

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

21536343222 is an admirable number.

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, 1794695263 + ... + 1794695274.

It is an arithmetic number, because the mean of its divisors is an integer number (5384085807).

Almost surely, 2^21536343222 is an apocalyptic number.

21536343222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21536343222 is a wasteful number, since it uses less digits than its factorization.

21536343222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3589390542.

The product of its digits is 51840, while the sum is 33.

The spelling of 21536343222 in words is "twenty-one billion, five hundred thirty-six million, three hundred forty-three thousand, two hundred twenty-two".