11011222001001 has 16 divisors (see below), whose sum is σ = 14785920723200. Its totient is φ = 7288843667328.

The previous prime is 11011222000981. The next prime is 11011222001033. The reversal of 11011222001001 is 10010022211011.

It is not a de Polignac number, because 11011222001001 - 2¹⁰ = 11011221999977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11011222501001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21584356 + ... + 22088613.

It is an arithmetic number, because the mean of its divisors is an integer number (924120045200).

Almost surely, 2^{11011222001001} is an apocalyptic number.

It is an amenable number.

11011222001001 is a deficient number, since it is larger than the sum of its proper divisors (3774698722199).

11011222001001 is a wasteful number, since it uses less digits than its factorization.

11011222001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43673568.

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

Adding to 11011222001001 its reverse (10010022211011), we get a palindrome (21021244212012).

The spelling of 11011222001001 in words is "eleven trillion, eleven billion, two hundred twenty-two million, one thousand, one".