2102110221020 has 12 divisors (see below), whose sum is σ = 4414431464184. Its totient is φ = 840844088400.

The previous prime is 2102110221019. The next prime is 2102110221031. The reversal of 2102110221020 is 201220112012.

It is a junction number, because it is equal to n+sod(n) for n = 2102110220986 and 2102110221004.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 52552755506 + ... + 52552755545.

It is an arithmetic number, because the mean of its divisors is an integer number (367869288682).

Almost surely, 2^{2102110221020} is an apocalyptic number.

2102110221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102110221020 is an abundant number, since it is smaller than the sum of its proper divisors (2312321243164).

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

2102110221020 is a wasteful number, since it uses less digits than its factorization.

2102110221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105105511060 (or 105105511058 counting only the distinct ones).

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

Adding to 2102110221020 its reverse (201220112012), we get a palindrome (2303330333032).

The spelling of 2102110221020 in words is "two trillion, one hundred two billion, one hundred ten million, two hundred twenty-one thousand, twenty".