111212212201112 has 32 divisors (see below), whose sum is σ = 227493005068800. Its totient is φ = 50548009965600.

The previous prime is 111212212201091. The next prime is 111212212201141. The reversal of 111212212201112 is 211102212212111.

It is a happy number.

It is a super-2 number, since 2×111212212201112² (a number of 29 digits) contains 22 as substring.

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, 35950964 + ... + 38921667.

It is an arithmetic number, because the mean of its divisors is an integer number (7109156408400).

Almost surely, 2^{111212212201112} is an apocalyptic number.

It is an amenable number.

111212212201112 is an abundant number, since it is smaller than the sum of its proper divisors (116280792867688).

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

111212212201112 is a wasteful number, since it uses less digits than its factorization.

111212212201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74889527 (or 74889523 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111212212201112 its reverse (211102212212111), we get a palindrome (322314424413223).

The spelling of 111212212201112 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred twelve million, two hundred one thousand, one hundred twelve".