1220323113213 has 16 divisors (see below), whose sum is σ = 1647164951040.
Its totient is φ = 803520531504.
The previous prime is 1220323113167. The next prime is 1220323113241. The reversal of 1220323113213 is 3123113230221.
It is not a de Polignac number, because 1220323113213 - 210 = 1220323112189 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1220323113283) 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, 197670 + ... + 1574712.
It is an arithmetic number, because the mean of its divisors is an integer number (102947809440).
Almost surely, 21220323113213 is an apocalyptic number.
It is an amenable number.
1220323113213 is a deficient number, since it is larger than the sum of its proper divisors (426841837827).
1220323113213 is a wasteful number, since it uses less digits than its factorization.
1220323113213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1380688.
The product of its (nonzero) digits is 1296, while the sum is 24.
Adding to 1220323113213 its reverse (3123113230221), we get a palindrome (4343436343434).
The spelling of 1220323113213 in words is "one trillion, two hundred twenty billion, three hundred twenty-three million, one hundred thirteen thousand, two hundred thirteen".