2121312232333 has 4 divisors (see below), whose sum is σ = 2424356836960. Its totient is φ = 1818267627708.

The previous prime is 2121312232331. The next prime is 2121312232337. The reversal of 2121312232333 is 3332322131212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2121312232333 - 2¹ = 2121312232331 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121312232331) 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, 151522302303 + ... + 151522302316.

It is an arithmetic number, because the mean of its divisors is an integer number (606089209240).

Almost surely, 2^{2121312232333} is an apocalyptic number.

It is an amenable number.

2121312232333 is a deficient number, since it is larger than the sum of its proper divisors (303044604627).

2121312232333 is an equidigital number, since it uses as much as digits as its factorization.

2121312232333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303044604626.

The product of its digits is 7776, while the sum is 28.

Adding to 2121312232333 its reverse (3332322131212), we get a palindrome (5453634363545).

The spelling of 2121312232333 in words is "two trillion, one hundred twenty-one billion, three hundred twelve million, two hundred thirty-two thousand, three hundred thirty-three".