221111200112 has 20 divisors (see below), whose sum is σ = 467348673336. Its totient is φ = 100505090880.

The previous prime is 221111200099. The next prime is 221111200117. The reversal of 221111200112 is 211002111122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111200117) 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, 628156643 + ... + 628156994.

Almost surely, 2^221111200112 is an apocalyptic number.

221111200112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221111200112 is an abundant number, since it is smaller than the sum of its proper divisors (246237473224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221111200112 is a wasteful number, since it uses less digits than its factorization.

221111200112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256313656 (or 1256313650 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221111200112 its reverse (211002111122), we get a palindrome (432113311234).

The spelling of 221111200112 in words is "two hundred twenty-one billion, one hundred eleven million, two hundred thousand, one hundred twelve".