21889646222 has 16 divisors (see below), whose sum is σ = 32984610912. Its totient is φ = 10894840320.

The previous prime is 21889646201. The next prime is 21889646239. The reversal of 21889646222 is 22264698812.

It is a super-2 number, since 2×21889646222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700598 + ... + 731174.

It is an arithmetic number, because the mean of its divisors is an integer number (2061538182).

Almost surely, 2^21889646222 is an apocalyptic number.

21889646222 is a deficient number, since it is larger than the sum of its proper divisors (11094964690).

21889646222 is a wasteful number, since it uses less digits than its factorization.

21889646222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32203.

The product of its digits is 1327104, while the sum is 50.

The spelling of 21889646222 in words is "twenty-one billion, eight hundred eighty-nine million, six hundred forty-six thousand, two hundred twenty-two".