2021201220120 has 32 divisors (see below), whose sum is σ = 6063603660720. Its totient is φ = 538986992000.

The previous prime is 2021201220097. The next prime is 2021201220127. The reversal of 2021201220120 is 210221021202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2021201220120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021201220127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8421671631 + ... + 8421671870.

Almost surely, 2^{2021201220120} is an apocalyptic number.

2021201220120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021201220120 is an abundant number, since it is smaller than the sum of its proper divisors (4042402440600).

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

2021201220120 is a wasteful number, since it uses less digits than its factorization.

2021201220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843343515 (or 16843343511 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2021201220120 its reverse (210221021202), we get a palindrome (2231422241322).

The spelling of 2021201220120 in words is "two trillion, twenty-one billion, two hundred one million, two hundred twenty thousand, one hundred twenty".