20020020201 has 12 divisors (see below), whose sum is σ = 29044088580. Its totient is φ = 13288396320.

The previous prime is 20020020191. The next prime is 20020020221. The reversal of 20020020201 is 10202002002.

It can be written as a sum of positive squares in 2 ways, for example, as 11141858025 + 8878162176 = 105555^2 + 94224^2 .

It is not a de Polignac number, because 20020020201 - 2¹⁵ = 20019987433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20020020221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4854810 + ... + 4858931.

It is an arithmetic number, because the mean of its divisors is an integer number (2420340715).

Almost surely, 2^20020020201 is an apocalyptic number.

It is an amenable number.

20020020201 is a deficient number, since it is larger than the sum of its proper divisors (9024068379).

20020020201 is a wasteful number, since it uses less digits than its factorization.

20020020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713976 (or 9713973 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20020020201 its reverse (10202002002), we get a palindrome (30222022203).

The spelling of 20020020201 in words is "twenty billion, twenty million, twenty thousand, two hundred one".