2011321222133 has 4 divisors (see below), whose sum is σ = 2011758755820. Its totient is φ = 2010883688448.

The previous prime is 2011321222117. The next prime is 2011321222217. The reversal of 2011321222133 is 3312221231102.

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 113203312849 + 1898117909284 = 336457^2 + 1377722^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011321222133 - 2⁴ = 2011321222117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011321222099 and 2011321222108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011321222103) 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, 218759948 + ... + 218769141.

It is an arithmetic number, because the mean of its divisors is an integer number (502939688955).

Almost surely, 2^{2011321222133} is an apocalyptic number.

It is an amenable number.

2011321222133 is a deficient number, since it is larger than the sum of its proper divisors (437533687).

2011321222133 is an equidigital number, since it uses as much as digits as its factorization.

2011321222133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437533686.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2011321222133 its reverse (3312221231102), we get a palindrome (5323542453235).

The spelling of 2011321222133 in words is "two trillion, eleven billion, three hundred twenty-one million, two hundred twenty-two thousand, one hundred thirty-three".