2223112211221 has 4 divisors (see below), whose sum is σ = 2425213321344. Its totient is φ = 2021011101100.

The previous prime is 2223112211209. The next prime is 2223112211261. The reversal of 2223112211221 is 1221122113222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2223112211221 - 2²⁷ = 2222977993493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2223112211192 and 2223112211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223112211261) 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, 101050555045 + ... + 101050555066.

It is an arithmetic number, because the mean of its divisors is an integer number (606303330336).

Almost surely, 2^{2223112211221} is an apocalyptic number.

It is an amenable number.

2223112211221 is a deficient number, since it is larger than the sum of its proper divisors (202101110123).

2223112211221 is a wasteful number, since it uses less digits than its factorization.

2223112211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202101110122.

The product of its digits is 384, while the sum is 22.

Adding to 2223112211221 its reverse (1221122113222), we get a palindrome (3444234324443).

The spelling of 2223112211221 in words is "two trillion, two hundred twenty-three billion, one hundred twelve million, two hundred eleven thousand, two hundred twenty-one".