111020313111 has 72 divisors (see below), whose sum is σ = 160962263280. Its totient is φ = 67970617344.

The previous prime is 111020313083. The next prime is 111020313143. The reversal of 111020313111 is 111313020111.

It is not a de Polignac number, because 111020313111 - 2¹⁴ = 111020296727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020313191) 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 71 ways as a sum of consecutive naturals, for example, 982480591 + ... + 982480703.

It is an arithmetic number, because the mean of its divisors is an integer number (2235586990).

Almost surely, 2^111020313111 is an apocalyptic number.

111020313111 is a deficient number, since it is larger than the sum of its proper divisors (49941950169).

111020313111 is an equidigital number, since it uses as much as digits as its factorization.

111020313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 111020313111 its reverse (111313020111), we get a palindrome (222333333222).

The spelling of 111020313111 in words is "one hundred eleven billion, twenty million, three hundred thirteen thousand, one hundred eleven".