2102230121 has 4 divisors (see below), whose sum is σ = 2137861200. Its totient is φ = 2066599044.

The previous prime is 2102230099. The next prime is 2102230181. The reversal of 2102230121 is 1210322012.

It is a happy number.

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 2102230121 - 2⁶ = 2102230057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2102230096 and 2102230105.

It is not an unprimeable number, because it can be changed into a prime (2102230181) 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, 17815451 + ... + 17815568.

It is an arithmetic number, because the mean of its divisors is an integer number (534465300).

Almost surely, 2^2102230121 is an apocalyptic number.

It is an amenable number.

2102230121 is a deficient number, since it is larger than the sum of its proper divisors (35631079).

2102230121 is an equidigital number, since it uses as much as digits as its factorization.

2102230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35631078.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2102230121 is about 45850.0831078854. The cubic root of 2102230121 is about 1281.0323135828.

Adding to 2102230121 its reverse (1210322012), we get a palindrome (3312552133).

The spelling of 2102230121 in words is "two billion, one hundred two million, two hundred thirty thousand, one hundred twenty-one".