2211310012321 has 4 divisors (see below), whose sum is σ = 2241601930372. Its totient is φ = 2181018094272.

The previous prime is 2211310012267. The next prime is 2211310012337. The reversal of 2211310012321 is 1232100131122.

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 615736826721 + 1595573185600 = 784689^2 + 1263160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211310012321 - 2⁹ = 2211310011809 is a prime.

It is a super-2 number, since 2×2211310012321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211310013321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15145958916 + ... + 15145959061.

It is an arithmetic number, because the mean of its divisors is an integer number (560400482593).

Almost surely, 2^{2211310012321} is an apocalyptic number.

It is an amenable number.

2211310012321 is a deficient number, since it is larger than the sum of its proper divisors (30291918051).

2211310012321 is an equidigital number, since it uses as much as digits as its factorization.

2211310012321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30291918050.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2211310012321 its reverse (1232100131122), we get a palindrome (3443410143443).

The spelling of 2211310012321 in words is "two trillion, two hundred eleven billion, three hundred ten million, twelve thousand, three hundred twenty-one".