2101210112020 has 24 divisors (see below), whose sum is σ = 4474689706368. Its totient is φ = 828646240800.

The previous prime is 2101210112011. The next prime is 2101210112117. The reversal of 2101210112020 is 202110121012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739861296 + ... + 739864135.

It is an arithmetic number, because the mean of its divisors is an integer number (186445404432).

Almost surely, 2^{2101210112020} is an apocalyptic number.

2101210112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101210112020 is an abundant number, since it is smaller than the sum of its proper divisors (2373479594348).

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

2101210112020 is a wasteful number, since it uses less digits than its factorization.

2101210112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479725511 (or 1479725509 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2101210112020 its reverse (202110121012), we get a palindrome (2303320233032).

The spelling of 2101210112020 in words is "two trillion, one hundred one billion, two hundred ten million, one hundred twelve thousand, twenty".