11001222001 has 8 divisors (see below), whose sum is σ = 13715809344. Its totient is φ = 8572380720.

The previous prime is 11001221993. The next prime is 11001222017. The reversal of 11001222001 is 10022210011.

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 11001222001 - 2³ = 11001221993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001222041) 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, 71436430 + ... + 71436583.

It is an arithmetic number, because the mean of its divisors is an integer number (1714476168).

Almost surely, 2^11001222001 is an apocalyptic number.

11001222001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11001222001 is a deficient number, since it is larger than the sum of its proper divisors (2714587343).

11001222001 is a wasteful number, since it uses less digits than its factorization.

11001222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142873031.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11001222001 its reverse (10022210011), we get a palindrome (21023432012).

The spelling of 11001222001 in words is "eleven billion, one million, two hundred twenty-two thousand, one".