2121232211 has 8 divisors (see below), whose sum is σ = 2483394144. Its totient is φ = 1773852480.

The previous prime is 2121232207. The next prime is 2121232213. The reversal of 2121232211 is 1122321212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121232211 - 2² = 2121232207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121232211.

It is not an unprimeable number, because it can be changed into a prime (2121232213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3695240 + ... + 3695813.

It is an arithmetic number, because the mean of its divisors is an integer number (310424268).

Almost surely, 2^2121232211 is an apocalyptic number.

2121232211 is a deficient number, since it is larger than the sum of its proper divisors (362161933).

2121232211 is an equidigital number, since it uses as much as digits as its factorization.

2121232211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7391101.

The product of its digits is 96, while the sum is 17.

The square root of 2121232211 is about 46056.8367454822. The cubic root of 2121232211 is about 1284.8804990134.

Adding to 2121232211 its reverse (1122321212), we get a palindrome (3243553423).

The spelling of 2121232211 in words is "two billion, one hundred twenty-one million, two hundred thirty-two thousand, two hundred eleven".