2133313103221 has 4 divisors (see below), whose sum is σ = 2133569611852. Its totient is φ = 2133056594592.

The previous prime is 2133313103183. The next prime is 2133313103279. The reversal of 2133313103221 is 1223013133312.

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 1349000946225 + 784312156996 = 1161465^2 + 885614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133313103221 - 2²¹ = 2133311006069 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 (2133313133221) 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, 128241840 + ... + 128258473.

It is an arithmetic number, because the mean of its divisors is an integer number (533392402963).

Almost surely, 2^{2133313103221} is an apocalyptic number.

It is an amenable number.

2133313103221 is a deficient number, since it is larger than the sum of its proper divisors (256508631).

2133313103221 is an equidigital number, since it uses as much as digits as its factorization.

2133313103221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256508630.

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

Adding to 2133313103221 its reverse (1223013133312), we get a palindrome (3356326236533).

The spelling of 2133313103221 in words is "two trillion, one hundred thirty-three billion, three hundred thirteen million, one hundred three thousand, two hundred twenty-one".