111111100506061 has 16 divisors (see below), whose sum is σ = 117420207759360. Its totient is φ = 104925417957360.

The previous prime is 111111100505957. The next prime is 111111100506067. The reversal of 111111100506061 is 160605001111111.

It is a cyclic number.

It is not a de Polignac number, because 111111100506061 - 2¹⁵ = 111111100473293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111100506067) 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, 17478156 + ... + 22971898.

It is an arithmetic number, because the mean of its divisors is an integer number (7338762984960).

Almost surely, 2^{111111100506061} is an apocalyptic number.

It is an amenable number.

111111100506061 is a deficient number, since it is larger than the sum of its proper divisors (6309107253299).

111111100506061 is a wasteful number, since it uses less digits than its factorization.

111111100506061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5504976.

The product of its (nonzero) digits is 180, while the sum is 25.

Adding to 111111100506061 its reverse (160605001111111), we get a palindrome (271716101617172).

The spelling of 111111100506061 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred million, five hundred six thousand, sixty-one".