2121233013133 has 4 divisors (see below), whose sum is σ = 2284404783388. Its totient is φ = 1958061242880.

The previous prime is 2121233013131. The next prime is 2121233013191. The reversal of 2121233013133 is 3313103321212.

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 749329147044 + 1371903866089 = 865638^2 + 1171283^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121233013133 - 2¹ = 2121233013131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121233013098 and 2121233013107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121233013131) 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, 81585885108 + ... + 81585885133.

It is an arithmetic number, because the mean of its divisors is an integer number (571101195847).

Almost surely, 2^{2121233013133} is an apocalyptic number.

It is an amenable number.

2121233013133 is a deficient number, since it is larger than the sum of its proper divisors (163171770255).

2121233013133 is a wasteful number, since it uses less digits than its factorization.

2121233013133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163171770254.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 2121233013133 its reverse (3313103321212), we get a palindrome (5434336334345).

The spelling of 2121233013133 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-three million, thirteen thousand, one hundred thirty-three".