111313102021 has 16 divisors (see below), whose sum is σ = 122900214528. Its totient is φ = 99974952000.

The previous prime is 111313101997. The next prime is 111313102067. The reversal of 111313102021 is 120201313111.

It is a happy number.

It is not a de Polignac number, because 111313102021 - 2⁹ = 111313101509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111313101986 and 111313102004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111313102091) 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, 406195 + ... + 622591.

It is an arithmetic number, because the mean of its divisors is an integer number (7681263408).

Almost surely, 2^111313102021 is an apocalyptic number.

111313102021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111313102021 is a deficient number, since it is larger than the sum of its proper divisors (11587112507).

111313102021 is a wasteful number, since it uses less digits than its factorization.

111313102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216972.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111313102021 its reverse (120201313111), we get a palindrome (231514415132).

The spelling of 111313102021 in words is "one hundred eleven billion, three hundred thirteen million, one hundred two thousand, twenty-one".