21222001201112 has 64 divisors (see below), whose sum is σ = 40454523360000. Its totient is φ = 10436045731200.

The previous prime is 21222001200979. The next prime is 21222001201123. The reversal of 21222001201112 is 21110210022212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49302839 + ... + 49731417.

It is an arithmetic number, because the mean of its divisors is an integer number (632101927500).

Almost surely, 2^{21222001201112} is an apocalyptic number.

It is an amenable number.

21222001201112 is a deficient number, since it is larger than the sum of its proper divisors (19232522158888).

21222001201112 is a wasteful number, since it uses less digits than its factorization.

21222001201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429144 (or 429140 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21222001201112 its reverse (21110210022212), we get a palindrome (42332211223324).

The spelling of 21222001201112 in words is "twenty-one trillion, two hundred twenty-two billion, one million, two hundred one thousand, one hundred twelve".