221112112112 has 40 divisors (see below), whose sum is σ = 430049725056. Its totient is φ = 110132358336.

The previous prime is 221112112069. The next prime is 221112112121. The reversal of 221112112112 is 211211211122.

It is a super-2 number, since 2×221112112112² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 4377143 + ... + 4427369.

Almost surely, 2^221112112112 is an apocalyptic number.

It is an amenable number.

221112112112 is a deficient number, since it is larger than the sum of its proper divisors (208937612944).

221112112112 is a wasteful number, since it uses less digits than its factorization.

221112112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51285 (or 51279 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 221112112112 its reverse (211211211122), we get a palindrome (432323323234).

The spelling of 221112112112 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred twelve thousand, one hundred twelve".