111212012 has 12 divisors (see below), whose sum is σ = 195747216. Its totient is φ = 55284240.

The previous prime is 111211999. The next prime is 111212021. The reversal of 111212012 is 210212111.

It is a super-2 number, since 2×111212012² = 24736223226176288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111211984 and 111212002.

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, 79664 + ... + 81047.

It is an arithmetic number, because the mean of its divisors is an integer number (16312268).

Almost surely, 2^111212012 is an apocalyptic number.

It is an amenable number.

111212012 is a deficient number, since it is larger than the sum of its proper divisors (84535204).

111212012 is a wasteful number, since it uses less digits than its factorization.

111212012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160888 (or 160886 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 111212012 is about 10545.7105972049. The cubic root of 111212012 is about 480.8953370044.

Adding to 111212012 its reverse (210212111), we get a palindrome (321424123).

Subtracting 111212012 from its reverse (210212111), we obtain a palindrome (99000099).

The spelling of 111212012 in words is "one hundred eleven million, two hundred twelve thousand, twelve".