111134023021 has 16 divisors (see below), whose sum is σ = 128796936064. Its totient is φ = 93918714624.

The previous prime is 111134022997. The next prime is 111134023043. The reversal of 111134023021 is 120320431111.

It is not a de Polignac number, because 111134023021 - 2¹¹ = 111134020973 is a prime.

It is a super-3 number, since 3×111134023021³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111134023021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111134023921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1421866 + ... + 1497988.

It is an arithmetic number, because the mean of its divisors is an integer number (8049808504).

Almost surely, 2^111134023021 is an apocalyptic number.

It is an amenable number.

111134023021 is a deficient number, since it is larger than the sum of its proper divisors (17662913043).

111134023021 is an equidigital number, since it uses as much as digits as its factorization.

111134023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79060.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111134023021 its reverse (120320431111), we get a palindrome (231454454132).

The spelling of 111134023021 in words is "one hundred eleven billion, one hundred thirty-four million, twenty-three thousand, twenty-one".