1220320122213 has 4 divisors (see below), whose sum is σ = 1627093496288. Its totient is φ = 813546748140.

The previous prime is 1220320122209. The next prime is 1220320122233. The reversal of 1220320122213 is 3122210230221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1220320122213 - 2² = 1220320122209 is a prime.

It is a super-3 number, since 3×1220320122213³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220320122213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220320122233) 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, 203386687033 + ... + 203386687038.

It is an arithmetic number, because the mean of its divisors is an integer number (406773374072).

Almost surely, 2^{1220320122213} is an apocalyptic number.

It is an amenable number.

1220320122213 is a deficient number, since it is larger than the sum of its proper divisors (406773374075).

1220320122213 is an equidigital number, since it uses as much as digits as its factorization.

1220320122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406773374074.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 1220320122213 its reverse (3122210230221), we get a palindrome (4342530352434).

The spelling of 1220320122213 in words is "one trillion, two hundred twenty billion, three hundred twenty million, one hundred twenty-two thousand, two hundred thirteen".