112021001 has 2 divisors, whose sum is σ = 112021002. Its totient is φ = 112021000.

The previous prime is 112020983. The next prime is 112021003. The reversal of 112021001 is 100120211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111281401 + 739600 = 10549^2 + 860^2 .

It is a cyclic number.

It is not a de Polignac number, because 112021001 - 2²⁶ = 44912137 is a prime.

It is a Sophie Germain prime.

Together with 112021003, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 112021001.

It is not a weakly prime, because it can be changed into another prime (112021003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56010500 + 56010501.

It is an arithmetic number, because the mean of its divisors is an integer number (56010501).

Almost surely, 2^112021001 is an apocalyptic number.

It is an amenable number.

112021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

112021001 is an equidigital number, since it uses as much as digits as its factorization.

112021001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 112021001 is about 10583.9974017382. The cubic root of 112021001 is about 482.0585791650.

Adding to 112021001 its reverse (100120211), we get a palindrome (212141212).

The spelling of 112021001 in words is "one hundred twelve million, twenty-one thousand, one".