112021101110021 has 4 divisors (see below), whose sum is σ = 112734611308332. Its totient is φ = 111307590911712.

The previous prime is 112021101110003. The next prime is 112021101110059. The reversal of 112021101110021 is 120011101120211.

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 11028449869921 + 100992651240100 = 3320911^2 + 10049510^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112021101110021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112021101109978 and 112021101110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112021101118021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356755098920 + ... + 356755099233.

It is an arithmetic number, because the mean of its divisors is an integer number (28183652827083).

Almost surely, 2^{112021101110021} is an apocalyptic number.

It is an amenable number.

112021101110021 is a deficient number, since it is larger than the sum of its proper divisors (713510198311).

112021101110021 is an equidigital number, since it uses as much as digits as its factorization.

112021101110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713510198310.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 112021101110021 its reverse (120011101120211), we get a palindrome (232032202230232).

The spelling of 112021101110021 in words is "one hundred twelve trillion, twenty-one billion, one hundred one million, one hundred ten thousand, twenty-one".