112011320111021 has 4 divisors (see below), whose sum is σ = 113847571260444. Its totient is φ = 110175068961600.

The previous prime is 112011320111011. The next prime is 112011320111027. The reversal of 112011320111021 is 120111023110211.

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 24341543701225 + 87669776409796 = 4933715^2 + 9363214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112011320111021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112011320111027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 918125574620 + ... + 918125574741.

It is an arithmetic number, because the mean of its divisors is an integer number (28461892815111).

Almost surely, 2^{112011320111021} is an apocalyptic number.

It is an amenable number.

112011320111021 is a deficient number, since it is larger than the sum of its proper divisors (1836251149423).

112011320111021 is an equidigital number, since it uses as much as digits as its factorization.

112011320111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836251149422.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 112011320111021 its reverse (120111023110211), we get a palindrome (232122343221232).

The spelling of 112011320111021 in words is "one hundred twelve trillion, eleven billion, three hundred twenty million, one hundred eleven thousand, twenty-one".