111212012012 has 12 divisors (see below), whose sum is σ = 194664368976. Its totient is φ = 55593620880.

The previous prime is 111212011931. The next prime is 111212012039. The reversal of 111212012012 is 210210212111.

It is a super-2 number, since 2×111212012012² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3076064 + ... + 3112007.

It is an arithmetic number, because the mean of its divisors is an integer number (16222030748).

Almost surely, 2^111212012012 is an apocalyptic number.

It is an amenable number.

111212012012 is a deficient number, since it is larger than the sum of its proper divisors (83452356964).

111212012012 is a wasteful number, since it uses less digits than its factorization.

111212012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192568 (or 6192566 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111212012012 its reverse (210210212111), we get a palindrome (321422224123).

The spelling of 111212012012 in words is "one hundred eleven billion, two hundred twelve million, twelve thousand, twelve".