210120020020201 has 2 divisors, whose sum is σ = 210120020020202. Its totient is φ = 210120020020200.

The previous prime is 210120020020193. The next prime is 210120020020241. The reversal of 210120020020201 is 102020020021012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153351691425625 + 56768328594576 = 12383525^2 + 7534476^2 .

It is a cyclic number.

It is not a de Polignac number, because 210120020020201 - 2³ = 210120020020193 is a prime.

It is not a weakly prime, because it can be changed into another prime (210120020020241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105060010010100 + 105060010010101.

It is an arithmetic number, because the mean of its divisors is an integer number (105060010010101).

Almost surely, 2^{210120020020201} is an apocalyptic number.

It is an amenable number.

210120020020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

210120020020201 is an equidigital number, since it uses as much as digits as its factorization.

210120020020201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210120020020201 its reverse (102020020021012), we get a palindrome (312140040041213).

The spelling of 210120020020201 in words is "two hundred ten trillion, one hundred twenty billion, twenty million, twenty thousand, two hundred one".