111211111120012 has 12 divisors (see below), whose sum is σ = 194619527426016. Its totient is φ = 55605531855440.

The previous prime is 111211111120009. The next prime is 111211111120019. The reversal of 111211111120012 is 210021111112111.

It is a super-2 number, since 2×111211111120012² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111211111120019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8569533 + ... + 17200555.

It is an arithmetic number, because the mean of its divisors is an integer number (16218293952168).

Almost surely, 2^{111211111120012} is an apocalyptic number.

It is an amenable number.

111211111120012 is a deficient number, since it is larger than the sum of its proper divisors (83408416306004).

111211111120012 is a wasteful number, since it uses less digits than its factorization.

111211111120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11852288 (or 11852286 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 111211111120012 its reverse (210021111112111), we get a palindrome (321232222232123).

The spelling of 111211111120012 in words is "one hundred eleven trillion, two hundred eleven billion, one hundred eleven million, one hundred twenty thousand, twelve".