11011220001001 has 8 divisors (see below), whose sum is σ = 12012361334208. Its totient is φ = 10010098890000.

The previous prime is 11011220000917. The next prime is 11011220001071. The reversal of 11011220001001 is 10010002211011.

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

It is not a de Polignac number, because 11011220001001 - 2¹³ = 11011219992809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11011220001071) 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, 3905650 + ... + 6105451.

It is an arithmetic number, because the mean of its divisors is an integer number (1501545166776).

Almost surely, 2^{11011220001001} is an apocalyptic number.

11011220001001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11011220001001 is a deficient number, since it is larger than the sum of its proper divisors (1001141333207).

11011220001001 is a wasteful number, since it uses less digits than its factorization.

11011220001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10111103.

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

Adding to 11011220001001 its reverse (10010002211011), we get a palindrome (21021222212012).

The spelling of 11011220001001 in words is "eleven trillion, eleven billion, two hundred twenty million, one thousand, one".