111220100012 has 24 divisors (see below), whose sum is σ = 222448905504. Its totient is φ = 47663891712.

The previous prime is 111220100011. The next prime is 111220100051. The reversal of 111220100012 is 210001022111.

It is a junction number, because it is equal to n+sod(n) for n = 111220099966 and 111220100002.

It is not an unprimeable number, because it can be changed into a prime (111220100011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841028 + ... + 964244.

It is an arithmetic number, because the mean of its divisors is an integer number (9268704396).

Almost surely, 2^111220100012 is an apocalyptic number.

It is an amenable number.

111220100012 is an abundant number, since it is smaller than the sum of its proper divisors (111228805492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111220100012 is a wasteful number, since it uses less digits than its factorization.

111220100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155465 (or 155463 counting only the distinct ones).

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

Adding to 111220100012 its reverse (210001022111), we get a palindrome (321221122123).

The spelling of 111220100012 in words is "one hundred eleven billion, two hundred twenty million, one hundred thousand, twelve".