210425032121 has 4 divisors (see below), whose sum is σ = 214902160512. Its totient is φ = 205947903732.

The previous prime is 210425032039. The next prime is 210425032177. The reversal of 210425032121 is 121230524012.

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 a de Polignac number, because none of the positive numbers 2^k-210425032121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210425038121) 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 3 ways as a sum of consecutive naturals, for example, 2238564125 + ... + 2238564218.

It is an arithmetic number, because the mean of its divisors is an integer number (53725540128).

Almost surely, 2^210425032121 is an apocalyptic number.

It is an amenable number.

210425032121 is a deficient number, since it is larger than the sum of its proper divisors (4477128391).

210425032121 is an equidigital number, since it uses as much as digits as its factorization.

210425032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477128390.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 210425032121 its reverse (121230524012), we get a palindrome (331655556133).

The spelling of 210425032121 in words is "two hundred ten billion, four hundred twenty-five million, thirty-two thousand, one hundred twenty-one".