20020120201 has 4 divisors (see below), whose sum is σ = 20397858372. Its totient is φ = 19642382032.

The previous prime is 20020120177. The next prime is 20020120243. The reversal of 20020120201 is 10202102002.

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 5577849225 + 14442270976 = 74685^2 + 120176^2 .

It is a cyclic number.

It is not a de Polignac number, because 20020120201 - 2⁷ = 20020120073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020150201) 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, 188869006 + ... + 188869111.

It is an arithmetic number, because the mean of its divisors is an integer number (5099464593).

Almost surely, 2^20020120201 is an apocalyptic number.

It is an amenable number.

20020120201 is a deficient number, since it is larger than the sum of its proper divisors (377738171).

20020120201 is an equidigital number, since it uses as much as digits as its factorization.

20020120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377738170.

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

Adding to 20020120201 its reverse (10202102002), we get a palindrome (30222222203).

The spelling of 20020120201 in words is "twenty billion, twenty million, one hundred twenty thousand, two hundred one".