1220103331 has 4 divisors (see below), whose sum is σ = 1232183664. Its totient is φ = 1208023000.

The previous prime is 1220103323. The next prime is 1220103343. The reversal of 1220103331 is 1333010221.

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 1220103331 - 2³ = 1220103323 is a prime.

It is a super-2 number, since 2×1220103331² = 2977304276634591122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220103361) 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, 6040015 + ... + 6040216.

It is an arithmetic number, because the mean of its divisors is an integer number (308045916).

Almost surely, 2^1220103331 is an apocalyptic number.

1220103331 is a deficient number, since it is larger than the sum of its proper divisors (12080333).

1220103331 is a wasteful number, since it uses less digits than its factorization.

1220103331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12080332.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1220103331 is about 34929.9775407887. The cubic root of 1220103331 is about 1068.5598965774.

Adding to 1220103331 its reverse (1333010221), we get a palindrome (2553113552).

The spelling of 1220103331 in words is "one billion, two hundred twenty million, one hundred three thousand, three hundred thirty-one".