2121200233 has 4 divisors (see below), whose sum is σ = 2121292368. Its totient is φ = 2121108100.

The previous prime is 2121200209. The next prime is 2121200293. The reversal of 2121200233 is 3320021212.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2121200233 - 2⁹ = 2121199721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121200293) 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, 21558 + ... + 68608.

It is an arithmetic number, because the mean of its divisors is an integer number (530323092).

Almost surely, 2^2121200233 is an apocalyptic number.

It is an amenable number.

2121200233 is a deficient number, since it is larger than the sum of its proper divisors (92135).

2121200233 is an equidigital number, since it uses as much as digits as its factorization.

2121200233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92134.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2121200233 is about 46056.4895861593. The cubic root of 2121200233 is about 1284.8740423708.

Adding to 2121200233 its reverse (3320021212), we get a palindrome (5441221445).

The spelling of 2121200233 in words is "two billion, one hundred twenty-one million, two hundred thousand, two hundred thirty-three".