111010999959 has 8 divisors (see below), whose sum is σ = 164460740720. Its totient is φ = 74007333288.

The previous prime is 111010999921. The next prime is 111010999963. The reversal of 111010999959 is 959999010111.

It is not a de Polignac number, because 111010999959 - 2¹⁶ = 111010934423 is a prime.

It is a super-2 number, since 2×111010999959² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010999909) 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, 2055759232 + ... + 2055759285.

It is an arithmetic number, because the mean of its divisors is an integer number (20557592590).

Almost surely, 2^111010999959 is an apocalyptic number.

111010999959 is a deficient number, since it is larger than the sum of its proper divisors (53449740761).

111010999959 is an equidigital number, since it uses as much as digits as its factorization.

111010999959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4111518526 (or 4111518520 counting only the distinct ones).

The product of its (nonzero) digits is 295245, while the sum is 54.

The spelling of 111010999959 in words is "one hundred eleven billion, ten million, nine hundred ninety-nine thousand, nine hundred fifty-nine".