2101222210020 has 48 divisors (see below), whose sum is σ = 6042433604928. Its totient is φ = 545181978240.

The previous prime is 2101222210001. The next prime is 2101222210049. The reversal of 2101222210020 is 200122221012.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473246026 + ... + 473250465.

It is an arithmetic number, because the mean of its divisors is an integer number (125884033436).

Almost surely, 2^{2101222210020} is an apocalyptic number.

2101222210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101222210020 is an abundant number, since it is smaller than the sum of its proper divisors (3941211394908).

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

2101222210020 is a wasteful number, since it uses less digits than its factorization.

2101222210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946496540 (or 946496538 counting only the distinct ones).

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

Adding to 2101222210020 its reverse (200122221012), we get a palindrome (2301344431032).

The spelling of 2101222210020 in words is "two trillion, one hundred one billion, two hundred twenty-two million, two hundred ten thousand, twenty".