20100220201 has 2 divisors, whose sum is σ = 20100220202. Its totient is φ = 20100220200.

The previous prime is 20100220199. The next prime is 20100220253. The reversal of 20100220201 is 10202200102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18150556176 + 1949664025 = 134724^2 + 44155^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100220201 - 2¹ = 20100220199 is a prime.

Together with 20100220199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20100220801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050110100 + 10050110101.

It is an arithmetic number, because the mean of its divisors is an integer number (10050110101).

Almost surely, 2^20100220201 is an apocalyptic number.

It is an amenable number.

20100220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100220201 is an equidigital number, since it uses as much as digits as its factorization.

20100220201 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 10.

Adding to 20100220201 its reverse (10202200102), we get a palindrome (30302420303).

The spelling of 20100220201 in words is "twenty billion, one hundred million, two hundred twenty thousand, two hundred one".