111202212112 has 20 divisors (see below), whose sum is σ = 215583429580. Its totient is φ = 55567778688.

The previous prime is 111202212097. The next prime is 111202212137. The reversal of 111202212112 is 211212202111.

It can be written as a sum of positive squares in 2 ways, for example, as 91387708416 + 19814503696 = 302304^2 + 140764^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 2055423 + ... + 2108830.

It is an arithmetic number, because the mean of its divisors is an integer number (10779171479).

Almost surely, 2^111202212112 is an apocalyptic number.

It is an amenable number.

111202212112 is a deficient number, since it is larger than the sum of its proper divisors (104381217468).

111202212112 is a wasteful number, since it uses less digits than its factorization.

111202212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165930 (or 4165924 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111202212112 its reverse (211212202111), we get a palindrome (322414414223).

The spelling of 111202212112 in words is "one hundred eleven billion, two hundred two million, two hundred twelve thousand, one hundred twelve".