20012020201 has 4 divisors (see below), whose sum is σ = 20019086932. Its totient is φ = 20004953472.

The previous prime is 20012020121. The next prime is 20012020213. The reversal of 20012020201 is 10202021002.

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 9939890601 + 10072129600 = 99699^2 + 100360^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012020201 - 2¹⁷ = 20011889129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012020001) 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, 3529116 + ... + 3534781.

It is an arithmetic number, because the mean of its divisors is an integer number (5004771733).

Almost surely, 2^20012020201 is an apocalyptic number.

It is an amenable number.

20012020201 is a deficient number, since it is larger than the sum of its proper divisors (7066731).

20012020201 is an equidigital number, since it uses as much as digits as its factorization.

20012020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066730.

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

Adding to 20012020201 its reverse (10202021002), we get a palindrome (30214041203).

It can be divided in two parts, 2001 and 2020201, that added together give a palindrome (2022202).

The spelling of 20012020201 in words is "twenty billion, twelve million, twenty thousand, two hundred one".