120210131021 has 4 divisors (see below), whose sum is σ = 120210854172. Its totient is φ = 120209407872.

The previous prime is 120210131011. The next prime is 120210131089. The reversal of 120210131021 is 120131012021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 90353746921 + 29856384100 = 300589^2 + 172790^2 .

It is a cyclic number.

It is not a de Polignac number, because 120210131021 - 2¹⁰ = 120210129997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120210130987 and 120210131005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120210131011) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 26891 + ... + 491063.

It is an arithmetic number, because the mean of its divisors is an integer number (30052713543).

Almost surely, 2^120210131021 is an apocalyptic number.

It is an amenable number.

120210131021 is a deficient number, since it is larger than the sum of its proper divisors (723151).

120210131021 is an equidigital number, since it uses as much as digits as its factorization.

120210131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723150.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 120210131021 its reverse (120131012021), we get a palindrome (240341143042).

The spelling of 120210131021 in words is "one hundred twenty billion, two hundred ten million, one hundred thirty-one thousand, twenty-one".