111122101221111 has 48 divisors (see below), whose sum is σ = 164944962686400. Its totient is φ = 72036731496960.

The previous prime is 111122101221023. The next prime is 111122101221119.

111122101221111 is a `hidden beast` number, since 1 + 111 + 221 + 0 + 1 + 221 + 111 = 666.

111122101221111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 111122101221111 - 2¹⁰ = 111122101220087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122101221119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4425223446 + ... + 4425248556.

It is an arithmetic number, because the mean of its divisors is an integer number (3436353389300).

Almost surely, 2^{111122101221111} is an apocalyptic number.

111122101221111 is a deficient number, since it is larger than the sum of its proper divisors (53822861465289).

111122101221111 is a wasteful number, since it uses less digits than its factorization.

111122101221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32456 (or 32453 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

It can be divided in two parts, 11112210 and 1221111, that added together give a palindrome (12333321).

The spelling of 111122101221111 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred one million, two hundred twenty-one thousand, one hundred eleven".