11112001 has 8 divisors (see below), whose sum is σ = 11354400. Its totient is φ = 10871520.

The previous prime is 11111993. The next prime is 11112007. The reversal of 11112001 is 10021111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11112001 - 2³ = 11111993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11112007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19245 + ... + 19813.

It is an arithmetic number, because the mean of its divisors is an integer number (1419300).

Almost surely, 2^11112001 is an apocalyptic number.

It is an amenable number.

11112001 is a deficient number, since it is larger than the sum of its proper divisors (242399).

11112001 is an equidigital number, since it uses as much as digits as its factorization.

11112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 11112001 is about 3333.4668139941. The cubic root of 11112001 is about 223.1502737445.

Adding to 11112001 its reverse (10021111), we get a palindrome (21133112).

Multiplying 11112001 by its reverse (10021111), we get a palindrome (111354595453111).

The spelling of 11112001 in words is "eleven million, one hundred twelve thousand, one".