11221120001001 has 8 divisors (see below), whose sum is σ = 14961787529184. Its totient is φ = 7480599570080.

The previous prime is 11221120000889. The next prime is 11221120001011. The reversal of 11221120001001 is 10010002112211.

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 11221120001001 - 2¹⁷ = 11221119869929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11221120001011) 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, 36596196 + ... + 36901541.

It is an arithmetic number, because the mean of its divisors is an integer number (1870223441148).

Almost surely, 2^{11221120001001} is an apocalyptic number.

It is an amenable number.

11221120001001 is a deficient number, since it is larger than the sum of its proper divisors (3740667528183).

11221120001001 is an equidigital number, since it uses as much as digits as its factorization.

11221120001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73548631.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11221120001001 its reverse (10010002112211), we get a palindrome (21231122113212).

The spelling of 11221120001001 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty million, one thousand, one".