2221123233321 has 24 divisors (see below), whose sum is σ = 3243040711560. Its totient is φ = 1464761120256.

The previous prime is 2221123233293. The next prime is 2221123233341. The reversal of 2221123233321 is 1233323211222.

2221123233321 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 1 + 2 + 323 + 332 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 267247641600 + 1953875591721 = 516960^2 + 1397811^2 .

It is not a de Polignac number, because 2221123233321 - 2¹⁴ = 2221123216937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221123233341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1627726 + ... + 2663031.

It is an arithmetic number, because the mean of its divisors is an integer number (135126696315).

Almost surely, 2^{2221123233321} is an apocalyptic number.

It is an amenable number.

2221123233321 is a deficient number, since it is larger than the sum of its proper divisors (1021917478239).

2221123233321 is a wasteful number, since it uses less digits than its factorization.

2221123233321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291385 (or 4291382 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 2221123233321 its reverse (1233323211222), we get a palindrome (3454446444543).

The spelling of 2221123233321 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-three million, two hundred thirty-three thousand, three hundred twenty-one".