220001100001 has 4 divisors (see below), whose sum is σ = 220186443312. Its totient is φ = 219815756692.

The previous prime is 220001099999. The next prime is 220001100047. The reversal of 220001100001 is 100001100022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220001100001 - 2¹ = 220001099999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220001100601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92669875 + ... + 92672248.

It is an arithmetic number, because the mean of its divisors is an integer number (55046610828).

Almost surely, 2^220001100001 is an apocalyptic number.

It is an amenable number.

220001100001 is a deficient number, since it is larger than the sum of its proper divisors (185343311).

220001100001 is a wasteful number, since it uses less digits than its factorization.

220001100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185343310.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 220001100001 its reverse (100001100022), we get a palindrome (320002200023).

The spelling of 220001100001 in words is "two hundred twenty billion, one million, one hundred thousand, one".