2021120201020 has 12 divisors (see below), whose sum is σ = 4244352422184. Its totient is φ = 808448080400.

The previous prime is 2021120200997. The next prime is 2021120201021. The reversal of 2021120201020 is 201020211202.

It is a happy number.

It is a super-2 number, since 2×2021120201020² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021120201021) 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, 50528005006 + ... + 50528005045.

It is an arithmetic number, because the mean of its divisors is an integer number (353696035182).

Almost surely, 2^{2021120201020} is an apocalyptic number.

2021120201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021120201020 is an abundant number, since it is smaller than the sum of its proper divisors (2223232221164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021120201020 is a wasteful number, since it uses less digits than its factorization.

2021120201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101056010060 (or 101056010058 counting only the distinct ones).

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

Adding to 2021120201020 its reverse (201020211202), we get a palindrome (2222140412222).

The spelling of 2021120201020 in words is "two trillion, twenty-one billion, one hundred twenty million, two hundred one thousand, twenty".