111011477999 has 2 divisors, whose sum is σ = 111011478000. Its totient is φ = 111011477998.

The previous prime is 111011477957. The next prime is 111011478013. The reversal of 111011477999 is 999774110111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111011477999 - 2⁸ = 111011477743 is a prime.

It is a super-3 number, since 3×111011477999³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111011477939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505738999 + 55505739000.

It is an arithmetic number, because the mean of its divisors is an integer number (55505739000).

Almost surely, 2^111011477999 is an apocalyptic number.

111011477999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011477999 is an equidigital number, since it uses as much as digits as its factorization.

111011477999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 50.

The spelling of 111011477999 in words is "one hundred eleven billion, eleven million, four hundred seventy-seven thousand, nine hundred ninety-nine".