111134320020 has 36 divisors (see below), whose sum is σ = 337107437940. Its totient is φ = 29635818624.

The previous prime is 111134320019. The next prime is 111134320049. The reversal of 111134320020 is 20023431111.

It can be written as a sum of positive squares in 2 ways, for example, as 63364972176 + 47769347844 = 251724^2 + 218562^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111134319975 and 111134320002.

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 11 ways as a sum of consecutive naturals, for example, 308706265 + ... + 308706624.

Almost surely, 2^111134320020 is an apocalyptic number.

111134320020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111134320020 is an abundant number, since it is smaller than the sum of its proper divisors (225973117920).

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

111134320020 is a wasteful number, since it uses less digits than its factorization.

111134320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617412904 (or 617412899 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 111134320020 its reverse (20023431111), we get a palindrome (131157751131).

The spelling of 111134320020 in words is "one hundred eleven billion, one hundred thirty-four million, three hundred twenty thousand, twenty".