220201020001 has 4 divisors (see below), whose sum is σ = 221417600404. Its totient is φ = 218984439600.

The previous prime is 220201019999. The next prime is 220201020023. The reversal of 220201020001 is 100020102022.

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 38233936225 + 181967083776 = 195535^2 + 426576^2 .

It is a cyclic number.

It is not a de Polignac number, because 220201020001 - 2¹ = 220201019999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220201020001.

It is not an unprimeable number, because it can be changed into a prime (220201020071) 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, 608289930 + ... + 608290291.

It is an arithmetic number, because the mean of its divisors is an integer number (55354400101).

Almost surely, 2^220201020001 is an apocalyptic number.

It is an amenable number.

220201020001 is a deficient number, since it is larger than the sum of its proper divisors (1216580403).

220201020001 is a wasteful number, since it uses less digits than its factorization.

220201020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216580402.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 220201020001 its reverse (100020102022), we get a palindrome (320221122023).

The spelling of 220201020001 in words is "two hundred twenty billion, two hundred one million, twenty thousand, one".