2121233133211 has 4 divisors (see below), whose sum is σ = 2122140033000. Its totient is φ = 2120326233424.

The previous prime is 2121233133203. The next prime is 2121233133281. The reversal of 2121233133211 is 1123313321212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121233133211 - 2³ = 2121233133203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121233133281) 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, 453446386 + ... + 453451063.

It is an arithmetic number, because the mean of its divisors is an integer number (530535008250).

Almost surely, 2^{2121233133211} is an apocalyptic number.

2121233133211 is a deficient number, since it is larger than the sum of its proper divisors (906899789).

2121233133211 is an equidigital number, since it uses as much as digits as its factorization.

2121233133211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906899788.

The product of its digits is 1296, while the sum is 25.

Adding to 2121233133211 its reverse (1123313321212), we get a palindrome (3244546454423).

The spelling of 2121233133211 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-three million, one hundred thirty-three thousand, two hundred eleven".