2121313404233 has 16 divisors (see below), whose sum is σ = 2372391528000. Its totient is φ = 1887924169152.

The previous prime is 2121313404229. The next prime is 2121313404283. The reversal of 2121313404233 is 3324043131212.

It is a cyclic number.

It is not a de Polignac number, because 2121313404233 - 2² = 2121313404229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 2121313404196 and 2121313404205.

It is not an unprimeable number, because it can be changed into a prime (2121313404283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52005743 + ... + 52046516.

It is an arithmetic number, because the mean of its divisors is an integer number (148274470500).

Almost surely, 2^{2121313404233} is an apocalyptic number.

It is an amenable number.

2121313404233 is a deficient number, since it is larger than the sum of its proper divisors (251078123767).

2121313404233 is a wasteful number, since it uses less digits than its factorization.

2121313404233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104052344.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 2121313404233 its reverse (3324043131212), we get a palindrome (5445356535445).

The spelling of 2121313404233 in words is "two trillion, one hundred twenty-one billion, three hundred thirteen million, four hundred four thousand, two hundred thirty-three".