2213120122321 has 4 divisors (see below), whose sum is σ = 2213129091492. Its totient is φ = 2213111153152.

The previous prime is 2213120122309. The next prime is 2213120122337. The reversal of 2213120122321 is 1232210213122.

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 1921994049600 + 291126072721 = 1386360^2 + 539561^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213120122321 - 2⁷ = 2213120122193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2213120122292 and 2213120122301.

It is not an unprimeable number, because it can be changed into a prime (2213120129321) 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, 4103680 + ... + 4611553.

It is an arithmetic number, because the mean of its divisors is an integer number (553282272873).

Almost surely, 2^{2213120122321} is an apocalyptic number.

It is an amenable number.

2213120122321 is a deficient number, since it is larger than the sum of its proper divisors (8969171).

2213120122321 is an equidigital number, since it uses as much as digits as its factorization.

2213120122321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8969170.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2213120122321 its reverse (1232210213122), we get a palindrome (3445330335443).

The spelling of 2213120122321 in words is "two trillion, two hundred thirteen billion, one hundred twenty million, one hundred twenty-two thousand, three hundred twenty-one".