111212012120012 has 12 divisors (see below), whose sum is σ = 194621292242160. Its totient is φ = 55605928622256.

The previous prime is 111212012120003. The next prime is 111212012120059. The reversal of 111212012120012 is 210021210212111.

It is a super-2 number, since 2×111212012120012² (a number of 29 digits) contains 22 as substring.

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, 16065848 + ... + 21921119.

It is an arithmetic number, because the mean of its divisors is an integer number (16218441020180).

Almost surely, 2^{111212012120012} is an apocalyptic number.

It is an amenable number.

111212012120012 is a deficient number, since it is larger than the sum of its proper divisors (83409280122148).

111212012120012 is a wasteful number, since it uses less digits than its factorization.

111212012120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38718880 (or 38718878 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111212012120012 its reverse (210021210212111), we get a palindrome (321233222332123).

The spelling of 111212012120012 in words is "one hundred eleven trillion, two hundred twelve billion, twelve million, one hundred twenty thousand, twelve".