1223130313221 has 16 divisors (see below), whose sum is σ = 1691500539648. Its totient is φ = 785526552000.

The previous prime is 1223130313193. The next prime is 1223130313243.

1223130313221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1223130313221 - 2¹³ = 1223130305029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223130313191 and 1223130313200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223130315221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54539245 + ... + 54561666.

It is an arithmetic number, because the mean of its divisors is an integer number (105718783728).

Almost surely, 2^{1223130313221} is an apocalyptic number.

It is an amenable number.

1223130313221 is a deficient number, since it is larger than the sum of its proper divisors (468370226427).

1223130313221 is a wasteful number, since it uses less digits than its factorization.

1223130313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109101052.

The product of its (nonzero) digits is 1296, while the sum is 24.

It can be divided in two parts, 1223130 and 313221, that added together give a palindrome (1536351).

The spelling of 1223130313221 in words is "one trillion, two hundred twenty-three billion, one hundred thirty million, three hundred thirteen thousand, two hundred twenty-one".