1220213103331 has 4 divisors (see below), whose sum is σ = 1227985161472. Its totient is φ = 1212441045192.

The previous prime is 1220213103299. The next prime is 1220213103349. The reversal of 1220213103331 is 1333013120221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220213103331 - 2⁵ = 1220213103299 is a prime.

It is a super-2 number, since 2×1220213103331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220213103731) 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, 3886028835 + ... + 3886029148.

It is an arithmetic number, because the mean of its divisors is an integer number (306996290368).

Almost surely, 2^{1220213103331} is an apocalyptic number.

1220213103331 is a deficient number, since it is larger than the sum of its proper divisors (7772058141).

1220213103331 is an equidigital number, since it uses as much as digits as its factorization.

1220213103331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7772058140.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1220213103331 its reverse (1333013120221), we get a palindrome (2553226223552).

The spelling of 1220213103331 in words is "one trillion, two hundred twenty billion, two hundred thirteen million, one hundred three thousand, three hundred thirty-one".