111100223212 has 24 divisors (see below), whose sum is σ = 212153538240. Its totient is φ = 50487455760.

The previous prime is 111100223207. The next prime is 111100223219. The reversal of 111100223212 is 212322001111.

It is a super-3 number, since 3×111100223212³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111100223219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137298 + ... + 490969.

It is an arithmetic number, because the mean of its divisors is an integer number (8839730760).

Almost surely, 2^111100223212 is an apocalyptic number.

It is an amenable number.

111100223212 is a deficient number, since it is larger than the sum of its proper divisors (101053315028).

111100223212 is a wasteful number, since it uses less digits than its factorization.

111100223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632301 (or 632299 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111100223212 its reverse (212322001111), we get a palindrome (323422224323).

The spelling of 111100223212 in words is "one hundred eleven billion, one hundred million, two hundred twenty-three thousand, two hundred twelve".