21112010222 has 16 divisors (see below), whose sum is σ = 32189814720. Its totient is φ = 10383301632.

The previous prime is 21112010209. The next prime is 21112010233. The reversal of 21112010222 is 22201021112.

It is a super-2 number, since 2×21112010222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21112010197 and 21112010206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272918 + ... + 341625.

It is an arithmetic number, because the mean of its divisors is an integer number (2011863420).

Almost surely, 2^21112010222 is an apocalyptic number.

21112010222 is a deficient number, since it is larger than the sum of its proper divisors (11077804498).

21112010222 is a wasteful number, since it uses less digits than its factorization.

21112010222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614827.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21112010222 its reverse (22201021112), we get a palindrome (43313031334).

The spelling of 21112010222 in words is "twenty-one billion, one hundred twelve million, ten thousand, two hundred twenty-two".