1220313324121 has 16 divisors (see below), whose sum is σ = 1382398306560. Its totient is φ = 1070243815680.

The previous prime is 1220313324073. The next prime is 1220313324149. The reversal of 1220313324121 is 1214233130221.

It is a cyclic number.

It is not a de Polignac number, because 1220313324121 - 2¹¹ = 1220313322073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220313024121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30948001 + ... + 30987406.

It is an arithmetic number, because the mean of its divisors is an integer number (86399894160).

Almost surely, 2^{1220313324121} is an apocalyptic number.

It is an amenable number.

1220313324121 is a deficient number, since it is larger than the sum of its proper divisors (162084982439).

1220313324121 is a wasteful number, since it uses less digits than its factorization.

1220313324121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61935504.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1220313324121 its reverse (1214233130221), we get a palindrome (2434546454342).

The spelling of 1220313324121 in words is "one trillion, two hundred twenty billion, three hundred thirteen million, three hundred twenty-four thousand, one hundred twenty-one".