220120201001 has 2 divisors, whose sum is σ = 220120201002. Its totient is φ = 220120201000.

The previous prime is 220120200997. The next prime is 220120201033. The reversal of 220120201001 is 100102021022.

It is a happy number.

220120201001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217472995600 + 2647205401 = 466340^2 + 51451^2 .

It is a cyclic number.

It is not a de Polignac number, because 220120201001 - 2² = 220120200997 is a prime.

It is not a weakly prime, because it can be changed into another prime (220120201501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060100500 + 110060100501.

It is an arithmetic number, because the mean of its divisors is an integer number (110060100501).

Almost surely, 2^220120201001 is an apocalyptic number.

It is an amenable number.

220120201001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220120201001 is an equidigital number, since it uses as much as digits as its factorization.

220120201001 is an odious number, because the sum of its binary digits is odd.

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

Adding to 220120201001 its reverse (100102021022), we get a palindrome (320222222023).

The spelling of 220120201001 in words is "two hundred twenty billion, one hundred twenty million, two hundred one thousand, one".