2012321221133 has 4 divisors (see below), whose sum is σ = 2012325415548. Its totient is φ = 2012317026720.

The previous prime is 2012321221117. The next prime is 2012321221139. The reversal of 2012321221133 is 3311221232102.

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 1461190187209 + 551131033924 = 1208797^2 + 742382^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012321221133 - 2⁴ = 2012321221117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012321221099 and 2012321221108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012321221139) 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, 1268378 + ... + 2373483.

It is an arithmetic number, because the mean of its divisors is an integer number (503081353887).

Almost surely, 2^{2012321221133} is an apocalyptic number.

It is an amenable number.

2012321221133 is a deficient number, since it is larger than the sum of its proper divisors (4194415).

2012321221133 is an equidigital number, since it uses as much as digits as its factorization.

2012321221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4194414.

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

Adding to 2012321221133 its reverse (3311221232102), we get a palindrome (5323542453235).

The spelling of 2012321221133 in words is "two trillion, twelve billion, three hundred twenty-one million, two hundred twenty-one thousand, one hundred thirty-three".