1222023112221 has 16 divisors (see below), whose sum is σ = 1631175598080. Its totient is φ = 813776698800.

The previous prime is 1222023112213. The next prime is 1222023112229. The reversal of 1222023112221 is 1222113202221.

It is an interprime number because it is at equal distance from previous prime (1222023112213) and next prime (1222023112229).

It is not a de Polignac number, because 1222023112221 - 2³ = 1222023112213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222023112229) 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 15 ways as a sum of consecutive naturals, for example, 14941786 + ... + 15023348.

It is an arithmetic number, because the mean of its divisors is an integer number (101948474880).

Almost surely, 2^{1222023112221} is an apocalyptic number.

It is an amenable number.

1222023112221 is a deficient number, since it is larger than the sum of its proper divisors (409152485859).

1222023112221 is a wasteful number, since it uses less digits than its factorization.

1222023112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87056.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1222023112221 its reverse (1222113202221), we get a palindrome (2444136314442).

The spelling of 1222023112221 in words is "one trillion, two hundred twenty-two billion, twenty-three million, one hundred twelve thousand, two hundred twenty-one".