21222133112 has 16 divisors (see below), whose sum is σ = 39793307400. Its totient is φ = 10610584480.

The previous prime is 21222133111. The next prime is 21222133129. The reversal of 21222133112 is 21133122212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222133111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186062 + ... + 277602.

Almost surely, 2^21222133112 is an apocalyptic number.

It is an amenable number.

21222133112 is a deficient number, since it is larger than the sum of its proper divisors (18571174288).

21222133112 is a wasteful number, since it uses less digits than its factorization.

21222133112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120526 (or 120522 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

Adding to 21222133112 its reverse (21133122212), we get a palindrome (42355255324).

The spelling of 21222133112 in words is "twenty-one billion, two hundred twenty-two million, one hundred thirty-three thousand, one hundred twelve".