2021200120120 has 64 divisors (see below), whose sum is σ = 4568128034400. Its totient is φ = 804851712000.

The previous prime is 2021200120117. The next prime is 2021200120127. The reversal of 2021200120120 is 210210021202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021200120120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021200120127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20200776 + ... + 20300584.

Almost surely, 2^{2021200120120} is an apocalyptic number.

2021200120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021200120120 is an abundant number, since it is smaller than the sum of its proper divisors (2546927914280).

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

2021200120120 is a wasteful number, since it uses less digits than its factorization.

2021200120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102088 (or 102084 counting only the distinct ones).

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

Adding to 2021200120120 its reverse (210210021202), we get a palindrome (2231410141322).

The spelling of 2021200120120 in words is "two trillion, twenty-one billion, two hundred million, one hundred twenty thousand, one hundred twenty".