20020021201201 has 72 divisors (see below), whose sum is σ = 26033720404896. Its totient is φ = 15295233058560.

The previous prime is 20020021201181. The next prime is 20020021201289. The reversal of 20020021201201 is 10210212002002.

It is a happy number.

It is not a de Polignac number, because 20020021201201 - 2²⁹ = 20019484330289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020021201601) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1006476466 + ... + 1006496356.

It is an arithmetic number, because the mean of its divisors is an integer number (361579450068).

Almost surely, 2^{20020021201201} is an apocalyptic number.

It is an amenable number.

20020021201201 is a deficient number, since it is larger than the sum of its proper divisors (6013699203695).

20020021201201 is a wasteful number, since it uses less digits than its factorization.

20020021201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23307 (or 23281 counting only the distinct ones).

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

Adding to 20020021201201 its reverse (10210212002002), we get a palindrome (30230233203203).

The spelling of 20020021201201 in words is "twenty trillion, twenty billion, twenty-one million, two hundred one thousand, two hundred one".