11001220022001 has 64 divisors (see below), whose sum is σ = 16737920269056. Its totient is φ = 6368842137600.

The previous prime is 11001220021963. The next prime is 11001220022041. The reversal of 11001220022001 is 10022002210011.

It is not a de Polignac number, because 11001220022001 - 2⁶ = 11001220021937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11001220022041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13124845 + ... + 13937861.

It is an arithmetic number, because the mean of its divisors is an integer number (261530004204).

Almost surely, 2^{11001220022001} is an apocalyptic number.

11001220022001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11001220022001 is a deficient number, since it is larger than the sum of its proper divisors (5736700247055).

11001220022001 is a wasteful number, since it uses less digits than its factorization.

11001220022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813282.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11001220022001 its reverse (10022002210011), we get a palindrome (21023222232012).

The spelling of 11001220022001 in words is "eleven trillion, one billion, two hundred twenty million, twenty-two thousand, one".