221222021112112 has 20 divisors (see below), whose sum is σ = 431494294539600. Its totient is φ = 109868654779328.

The previous prime is 221222021112109. The next prime is 221222021112137. The reversal of 221222021112112 is 211211120222122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46397233588 + ... + 46397238355.

It is an arithmetic number, because the mean of its divisors is an integer number (21574714726980).

Almost surely, 2^{221222021112112} is an apocalyptic number.

It is an amenable number.

221222021112112 is a deficient number, since it is larger than the sum of its proper divisors (210272273427488).

221222021112112 is a wasteful number, since it uses less digits than its factorization.

221222021112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92794472100 (or 92794472094 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 221222021112112 its reverse (211211120222122), we get a palindrome (432433141334234).

The spelling of 221222021112112 in words is "two hundred twenty-one trillion, two hundred twenty-two billion, twenty-one million, one hundred twelve thousand, one hundred twelve".