220120200001 has 4 divisors (see below), whose sum is σ = 237052523092. Its totient is φ = 203187876912.

The previous prime is 220120199989. The next prime is 220120200007. The reversal of 220120200001 is 100002021022.

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 12709180225 + 207411019776 = 112735^2 + 455424^2 .

It is a cyclic number.

It is not a de Polignac number, because 220120200001 - 2⁹ = 220120199489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220120200007) 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, 8466161526 + ... + 8466161551.

It is an arithmetic number, because the mean of its divisors is an integer number (59263130773).

Almost surely, 2^220120200001 is an apocalyptic number.

It is an amenable number.

220120200001 is a deficient number, since it is larger than the sum of its proper divisors (16932323091).

220120200001 is a wasteful number, since it uses less digits than its factorization.

220120200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16932323090.

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

Adding to 220120200001 its reverse (100002021022), we get a palindrome (320122221023).

The spelling of 220120200001 in words is "two hundred twenty billion, one hundred twenty million, two hundred thousand, one".