111120212993 has 4 divisors (see below), whose sum is σ = 111138468420. Its totient is φ = 111101957568.

The previous prime is 111120212953. The next prime is 111120213013. The reversal of 111120212993 is 399212021111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47165849329 + 63954363664 = 217177^2 + 252892^2 .

It is a cyclic number.

It is not a de Polignac number, because 111120212993 - 2³² = 106825245697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111120212953) 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 3 ways as a sum of consecutive naturals, for example, 9118580 + ... + 9130757.

It is an arithmetic number, because the mean of its divisors is an integer number (27784617105).

Almost surely, 2^111120212993 is an apocalyptic number.

It is an amenable number.

111120212993 is a deficient number, since it is larger than the sum of its proper divisors (18255427).

111120212993 is an equidigital number, since it uses as much as digits as its factorization.

111120212993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18255426.

The product of its (nonzero) digits is 1944, while the sum is 32.

The spelling of 111120212993 in words is "one hundred eleven billion, one hundred twenty million, two hundred twelve thousand, nine hundred ninety-three".