120210120021 has 16 divisors (see below), whose sum is σ = 161376652800. Its totient is φ = 79591972800.

The previous prime is 120210120013. The next prime is 120210120071. The reversal of 120210120021 is 120021012021.

It is not a de Polignac number, because 120210120021 - 2³ = 120210120013 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120210119979 and 120210120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120210120001) by changing a digit.

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, 5237671 + ... + 5260571.

It is an arithmetic number, because the mean of its divisors is an integer number (10086040800).

Almost surely, 2^120210120021 is an apocalyptic number.

It is an amenable number.

120210120021 is a deficient number, since it is larger than the sum of its proper divisors (41166532779).

120210120021 is a wasteful number, since it uses less digits than its factorization.

120210120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34796.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120210120021 its reverse (120021012021), we get a palindrome (240231132042).

The spelling of 120210120021 in words is "one hundred twenty billion, two hundred ten million, one hundred twenty thousand, twenty-one".