11221100221001 has 32 divisors (see below), whose sum is σ = 12853674086400. Its totient is φ = 9702027720000.

The previous prime is 11221100220997. The next prime is 11221100221031. The reversal of 11221100221001 is 10012200112211.

It is not a de Polignac number, because 11221100221001 - 2² = 11221100220997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221100221031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77405855 + ... + 77550683.

It is an arithmetic number, because the mean of its divisors is an integer number (401677315200).

Almost surely, 2^{11221100221001} is an apocalyptic number.

11221100221001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11221100221001 is a deficient number, since it is larger than the sum of its proper divisors (1632573865399).

11221100221001 is a wasteful number, since it uses less digits than its factorization.

11221100221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148781.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11221100221001 its reverse (10012200112211), we get a palindrome (21233300333212).

The spelling of 11221100221001 in words is "eleven trillion, two hundred twenty-one billion, one hundred million, two hundred twenty-one thousand, one".