111122011122211 has 16 divisors (see below), whose sum is σ = 119297066522400. Its totient is φ = 103183593147648.

The previous prime is 111122011122127. The next prime is 111122011122257. The reversal of 111122011122211 is 112221110221111.

It is a cyclic number.

It is not a de Polignac number, because 111122011122211 - 2¹⁵ = 111122011089443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111122011126211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54336826 + ... + 56344783.

It is an arithmetic number, because the mean of its divisors is an integer number (7456066657650).

Almost surely, 2^{111122011122211} is an apocalyptic number.

111122011122211 is a deficient number, since it is larger than the sum of its proper divisors (8175055400189).

111122011122211 is a wasteful number, since it uses less digits than its factorization.

111122011122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110682678.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111122011122211 its reverse (112221110221111), we get a palindrome (223343121343322).

The spelling of 111122011122211 in words is "one hundred eleven trillion, one hundred twenty-two billion, eleven million, one hundred twenty-two thousand, two hundred eleven".