220100201020001 has 4 divisors (see below), whose sum is σ = 220100630363652. Its totient is φ = 220099771676352.

The previous prime is 220100201019971. The next prime is 220100201020009. The reversal of 220100201020001 is 100020102001022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 116760472691776 + 103339728328225 = 10805576^2 + 10165615^2 .

It is a cyclic number.

It is not a de Polignac number, because 220100201020001 - 2³⁸ = 219825323113057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220100201020009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213901940 + ... + 214928453.

It is an arithmetic number, because the mean of its divisors is an integer number (55025157590913).

Almost surely, 2^{220100201020001} is an apocalyptic number.

It is an amenable number.

220100201020001 is a deficient number, since it is larger than the sum of its proper divisors (429343651).

220100201020001 is an equidigital number, since it uses as much as digits as its factorization.

220100201020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429343650.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220100201020001 its reverse (100020102001022), we get a palindrome (320120303021023).

The spelling of 220100201020001 in words is "two hundred twenty trillion, one hundred billion, two hundred one million, twenty thousand, one".