2312122212133 has 4 divisors (see below), whose sum is σ = 2448129401100. Its totient is φ = 2176115023168.

The previous prime is 2312122212119. The next prime is 2312122212161. The reversal of 2312122212133 is 3312122212132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 648762589764 + 1663359622369 = 805458^2 + 1289713^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312122212133 - 2⁹ = 2312122211621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2312122212098 and 2312122212107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312122252133) 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, 68003594458 + ... + 68003594491.

It is an arithmetic number, because the mean of its divisors is an integer number (612032350275).

Almost surely, 2^{2312122212133} is an apocalyptic number.

It is an amenable number.

2312122212133 is a deficient number, since it is larger than the sum of its proper divisors (136007188967).

2312122212133 is a wasteful number, since it uses less digits than its factorization.

2312122212133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136007188966.

The product of its digits is 1728, while the sum is 25.

Adding to 2312122212133 its reverse (3312122212132), we get a palindrome (5624244424265).

Subtracting 2312122212133 from its reverse (3312122212132), we obtain a palindrome (999999999999).

The spelling of 2312122212133 in words is "two trillion, three hundred twelve billion, one hundred twenty-two million, two hundred twelve thousand, one hundred thirty-three".