111021210112 has 20 divisors (see below), whose sum is σ = 221825582946. Its totient is φ = 55510604800.

The previous prime is 111021210109. The next prime is 111021210133. The reversal of 111021210112 is 211012120111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 109153587456 + 1867622656 = 330384^2 + 43216^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111021210092 and 111021210101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108418639 + ... + 108419662.

Almost surely, 2^111021210112 is an apocalyptic number.

It is an amenable number.

111021210112 is a deficient number, since it is larger than the sum of its proper divisors (110804372834).

111021210112 is an frugal number, since it uses more digits than its factorization.

111021210112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216838319 (or 216838303 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111021210112 its reverse (211012120111), we get a palindrome (322033330223).

Subtracting 111021210112 from its reverse (211012120111), we obtain a palindrome (99990909999).

The spelling of 111021210112 in words is "one hundred eleven billion, twenty-one million, two hundred ten thousand, one hundred twelve".