11112021001 has 4 divisors (see below), whose sum is σ = 11300360400. Its totient is φ = 10923681604.

The previous prime is 11112020951. The next prime is 11112021017. The reversal of 11112021001 is 10012021111.

11112021001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11112021001 - 2⁹ = 11112020489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112021101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94169611 + ... + 94169728.

It is an arithmetic number, because the mean of its divisors is an integer number (2825090100).

Almost surely, 2^11112021001 is an apocalyptic number.

It is an amenable number.

11112021001 is a deficient number, since it is larger than the sum of its proper divisors (188339399).

11112021001 is an equidigital number, since it uses as much as digits as its factorization.

11112021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188339398.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11112021001 its reverse (10012021111), we get a palindrome (21124042112).

The spelling of 11112021001 in words is "eleven billion, one hundred twelve million, twenty-one thousand, one".