111000660020 has 12 divisors (see below), whose sum is σ = 233101386084. Its totient is φ = 44400264000.

The previous prime is 111000660007. The next prime is 111000660107. The reversal of 111000660020 is 20066000111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 85341105424 + 25659554596 = 292132^2 + 160186^2 .

It is a super-2 number, since 2×111000660020² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775016481 + ... + 2775016520.

It is an arithmetic number, because the mean of its divisors is an integer number (19425115507).

Almost surely, 2^111000660020 is an apocalyptic number.

111000660020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111000660020 is an abundant number, since it is smaller than the sum of its proper divisors (122100726064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111000660020 is a wasteful number, since it uses less digits than its factorization.

111000660020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550033010 (or 5550033008 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 111000660020 its reverse (20066000111), we get a palindrome (131066660131).

The spelling of 111000660020 in words is "one hundred eleven billion, six hundred sixty thousand, twenty".