112222201212 has 72 divisors (see below), whose sum is σ = 311250204720. Its totient is φ = 33810136320.

The previous prime is 112222201207. The next prime is 112222201249. The reversal of 112222201212 is 212102222211.

It is a happy number.

112222201212 is a `hidden beast` number, since 11 + 222 + 220 + 1 + 212 = 666.

It is a super-2 number, since 2×112222201212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 750537 + ... + 887552.

It is an arithmetic number, because the mean of its divisors is an integer number (4322919510).

Almost surely, 2^112222201212 is an apocalyptic number.

112222201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

112222201212 is an abundant number, since it is smaller than the sum of its proper divisors (199028003508).

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

112222201212 is a wasteful number, since it uses less digits than its factorization.

112222201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638283 (or 1638278 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 112222201212 its reverse (212102222211), we get a palindrome (324324423423).

The spelling of 112222201212 in words is "one hundred twelve billion, two hundred twenty-two million, two hundred one thousand, two hundred twelve".