11112001001 has 8 divisors (see below), whose sum is σ = 11163080544. Its totient is φ = 11061018720.

The previous prime is 11112000953. The next prime is 11112001049. The reversal of 11112001001 is 10010021111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11112000953) and next prime (11112001049).

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 11112001001 - 2¹⁸ = 11111738857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11112001001.

It is not an unprimeable number, because it can be changed into a prime (11112001301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209846 + ... + 257408.

It is an arithmetic number, because the mean of its divisors is an integer number (1395385068).

Almost surely, 2^11112001001 is an apocalyptic number.

It is an amenable number.

11112001001 is a deficient number, since it is larger than the sum of its proper divisors (51079543).

11112001001 is an equidigital number, since it uses as much as digits as its factorization.

11112001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48631.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11112001001 its reverse (10010021111), we get a palindrome (21122022112).

The spelling of 11112001001 in words is "eleven billion, one hundred twelve million, one thousand, one".