21211132222 has 16 divisors (see below), whose sum is σ = 36404390880. Its totient is φ = 9079872768.

The previous prime is 21211132199. The next prime is 21211132301. The reversal of 21211132222 is 22223111212.

It is a self number, because there is not a number n which added to its sum of digits gives 21211132222.

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, 871947 + ... + 895942.

It is an arithmetic number, because the mean of its divisors is an integer number (2275274430).

Almost surely, 2^21211132222 is an apocalyptic number.

21211132222 is a deficient number, since it is larger than the sum of its proper divisors (15193258658).

21211132222 is a wasteful number, since it uses less digits than its factorization.

21211132222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768755.

The product of its digits is 192, while the sum is 19.

Adding to 21211132222 its reverse (22223111212), we get a palindrome (43434243434).

The spelling of 21211132222 in words is "twenty-one billion, two hundred eleven million, one hundred thirty-two thousand, two hundred twenty-two".