220001102001 has 8 divisors (see below), whose sum is σ = 325927558560. Its totient is φ = 146667401316.

The previous prime is 220001101949. The next prime is 220001102003. The reversal of 220001102001 is 100201100022.

It is not a de Polignac number, because 220001102001 - 2⁶ = 220001101937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (220001102003) 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, 4074094455 + ... + 4074094508.

It is an arithmetic number, because the mean of its divisors is an integer number (40740944820).

Almost surely, 2^220001102001 is an apocalyptic number.

It is an amenable number.

220001102001 is a deficient number, since it is larger than the sum of its proper divisors (105926456559).

220001102001 is an equidigital number, since it uses as much as digits as its factorization.

220001102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8148188972 (or 8148188966 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 220001102001 its reverse (100201100022), we get a palindrome (320202202023).

The spelling of 220001102001 in words is "two hundred twenty billion, one million, one hundred two thousand, one".