2121311323233 has 6 divisors (see below), whose sum is σ = 3064116355794. Its totient is φ = 1414207548816.

The previous prime is 2121311323189. The next prime is 2121311323283. The reversal of 2121311323233 is 3323231131212.

2121311323233 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 311 + 323 + 23 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1999079276544 + 122232046689 = 1413888^2 + 349617^2 .

It is not a de Polignac number, because 2121311323233 - 2⁹ = 2121311322721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121311323197 and 2121311323206.

It is not an unprimeable number, because it can be changed into a prime (2121311323283) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117850629060 + ... + 117850629077.

It is an arithmetic number, because the mean of its divisors is an integer number (510686059299).

Almost surely, 2^{2121311323233} is an apocalyptic number.

It is an amenable number.

2121311323233 is a deficient number, since it is larger than the sum of its proper divisors (942805032561).

2121311323233 is a wasteful number, since it uses less digits than its factorization.

2121311323233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235701258143 (or 235701258140 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 2121311323233 its reverse (3323231131212), we get a palindrome (5444542454445).

The spelling of 2121311323233 in words is "two trillion, one hundred twenty-one billion, three hundred eleven million, three hundred twenty-three thousand, two hundred thirty-three".