111244012011111 has 16 divisors (see below), whose sum is σ = 172293614233088. Its totient is φ = 62525908389600.

The previous prime is 111244012011101. The next prime is 111244012011127. The reversal of 111244012011111 is 111110210442111.

It is a happy number.

It is not a de Polignac number, because 111244012011111 - 2¹⁷ = 111244011880039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111244012011101) 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, 43420768435 + ... + 43420770996.

It is an arithmetic number, because the mean of its divisors is an integer number (10768350889568).

Almost surely, 2^{111244012011111} is an apocalyptic number.

111244012011111 is a deficient number, since it is larger than the sum of its proper divisors (61049602221977).

111244012011111 is an equidigital number, since it uses as much as digits as its factorization.

111244012011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86841539502.

The product of its (nonzero) digits is 64, while the sum is 21.

Adding to 111244012011111 its reverse (111110210442111), we get a palindrome (222354222453222).

The spelling of 111244012011111 in words is "one hundred eleven trillion, two hundred forty-four billion, twelve million, eleven thousand, one hundred eleven".