111012220111 has 8 divisors (see below), whose sum is σ = 120267501984. Its totient is φ = 101859206880.

The previous prime is 111012220097. The next prime is 111012220133. The reversal of 111012220111 is 111022210111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111012220111 - 2⁵ = 111012220079 is a prime.

It is a super-2 number, since 2×111012220111² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111012220091 and 111012220100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012220171) 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, 25564900 + ... + 25569241.

It is an arithmetic number, because the mean of its divisors is an integer number (15033437748).

Almost surely, 2^111012220111 is an apocalyptic number.

111012220111 is a deficient number, since it is larger than the sum of its proper divisors (9255281873).

111012220111 is a wasteful number, since it uses less digits than its factorization.

111012220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51134321.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111012220111 its reverse (111022210111), we get a palindrome (222034430222).

The spelling of 111012220111 in words is "one hundred eleven billion, twelve million, two hundred twenty thousand, one hundred eleven".