2100122010020 has 24 divisors (see below), whose sum is σ = 4411232347200. Its totient is φ = 839862875232.

The previous prime is 2100122009971. The next prime is 2100122010031. The reversal of 2100122010020 is 200102210012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2100122009983 and 2100122010010.

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, 11527910 + ... + 11708669.

It is an arithmetic number, because the mean of its divisors is an integer number (183801347800).

Almost surely, 2^{2100122010020} is an apocalyptic number.

2100122010020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100122010020 is an abundant number, since it is smaller than the sum of its proper divisors (2311110337180).

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

2100122010020 is a wasteful number, since it uses less digits than its factorization.

2100122010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23241107 (or 23241105 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2100122010020 its reverse (200102210012), we get a palindrome (2300224220032).

The spelling of 2100122010020 in words is "two trillion, one hundred billion, one hundred twenty-two million, ten thousand, twenty".