1220313321203 has 4 divisors (see below), whose sum is σ = 1231112554248. Its totient is φ = 1209514088160.

The previous prime is 1220313321187. The next prime is 1220313321217. The reversal of 1220313321203 is 3021233130221.

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 1220313321203 - 2⁴ = 1220313321187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220313321223) 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, 5399616353 + ... + 5399616578.

It is an arithmetic number, because the mean of its divisors is an integer number (307778138562).

Almost surely, 2^{1220313321203} is an apocalyptic number.

1220313321203 is a deficient number, since it is larger than the sum of its proper divisors (10799233045).

1220313321203 is a wasteful number, since it uses less digits than its factorization.

1220313321203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10799233044.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1220313321203 its reverse (3021233130221), we get a palindrome (4241546451424).

The spelling of 1220313321203 in words is "one trillion, two hundred twenty billion, three hundred thirteen million, three hundred twenty-one thousand, two hundred three".