120210200021 has 12 divisors (see below), whose sum is σ = 123107999040. Its totient is φ = 117379127880.

The previous prime is 120210199999. The next prime is 120210200053. The reversal of 120210200021 is 120002012021.

It is a happy number.

It is not a de Polignac number, because 120210200021 - 2¹⁸ = 120209937877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120210199975 and 120210200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120210200821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7778420 + ... + 7793858.

It is an arithmetic number, because the mean of its divisors is an integer number (10258999920).

Almost surely, 2^120210200021 is an apocalyptic number.

It is an amenable number.

120210200021 is a deficient number, since it is larger than the sum of its proper divisors (2897799019).

120210200021 is an equidigital number, since it uses as much as digits as its factorization.

120210200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19736 (or 19693 counting only the distinct ones).

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

Adding to 120210200021 its reverse (120002012021), we get a palindrome (240212212042).

The spelling of 120210200021 in words is "one hundred twenty billion, two hundred ten million, two hundred thousand, twenty-one".