2021210210120 has 64 divisors (see below), whose sum is σ = 4603584585600. Its totient is φ = 798571952640.

The previous prime is 2021210210093. The next prime is 2021210210137. The reversal of 2021210210120 is 210120121202.

It is a junction number, because it is equal to n+sod(n) for n = 2021210210095 and 2021210210104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3148955 + ... + 3736085.

It is an arithmetic number, because the mean of its divisors is an integer number (71931009150).

Almost surely, 2^{2021210210120} is an apocalyptic number.

2021210210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021210210120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2301792292800).

2021210210120 is an abundant number, since it is smaller than the sum of its proper divisors (2582374375480).

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

2021210210120 is a wasteful number, since it uses less digits than its factorization.

2021210210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588198 (or 588194 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2021210210120 its reverse (210120121202), we get a palindrome (2231330331322).

The spelling of 2021210210120 in words is "two trillion, twenty-one billion, two hundred ten million, two hundred ten thousand, one hundred twenty".