1220311321333 has 16 divisors (see below), whose sum is σ = 1372441432320. Its totient is φ = 1076584189824.

The previous prime is 1220311321267. The next prime is 1220311321357. The reversal of 1220311321333 is 3331231130221.

It is not a de Polignac number, because 1220311321333 - 2⁹ = 1220311320821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220311321298 and 1220311321307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220311321363) 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, 1302888 + ... + 2034241.

It is an arithmetic number, because the mean of its divisors is an integer number (85777589520).

Almost surely, 2^{1220311321333} is an apocalyptic number.

1220311321333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1220311321333 is a deficient number, since it is larger than the sum of its proper divisors (152130110987).

1220311321333 is a wasteful number, since it uses less digits than its factorization.

1220311321333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338388.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1220311321333 its reverse (3331231130221), we get a palindrome (4551542451554).

The spelling of 1220311321333 in words is "one trillion, two hundred twenty billion, three hundred eleven million, three hundred twenty-one thousand, three hundred thirty-three".