111211320311111 has 8 divisors (see below), whose sum is σ = 113850289889424. Its totient is φ = 108574744360320.

The previous prime is 111211320311099. The next prime is 111211320311167. The reversal of 111211320311111 is 111113023112111.

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 111211320311111 - 2¹⁸ = 111211320048967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211320313111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598312856 + ... + 598498701.

It is an arithmetic number, because the mean of its divisors is an integer number (14231286236178).

Almost surely, 2^{111211320311111} is an apocalyptic number.

111211320311111 is a deficient number, since it is larger than the sum of its proper divisors (2638969578313).

111211320311111 is a wasteful number, since it uses less digits than its factorization.

111211320311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196813761.

The product of its (nonzero) digits is 36, while the sum is 20.

Adding to 111211320311111 its reverse (111113023112111), we get a palindrome (222324343423222).

The spelling of 111211320311111 in words is "one hundred eleven trillion, two hundred eleven billion, three hundred twenty million, three hundred eleven thousand, one hundred eleven".