120210210121 has 4 divisors (see below), whose sum is σ = 121903311744. Its totient is φ = 118517108500.

The previous prime is 120210210047. The next prime is 120210210139. The reversal of 120210210121 is 121012012021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120210210121 - 2¹¹ = 120210208073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120210210181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846550705 + ... + 846550846.

It is an arithmetic number, because the mean of its divisors is an integer number (30475827936).

Almost surely, 2^120210210121 is an apocalyptic number.

It is an amenable number.

120210210121 is a deficient number, since it is larger than the sum of its proper divisors (1693101623).

120210210121 is an equidigital number, since it uses as much as digits as its factorization.

120210210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693101622.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120210210121 its reverse (121012012021), we get a palindrome (241222222142).

The spelling of 120210210121 in words is "one hundred twenty billion, two hundred ten million, two hundred ten thousand, one hundred twenty-one".