1222020103 has 4 divisors (see below), whose sum is σ = 1222753960. Its totient is φ = 1221286248.

The previous prime is 1222020083. The next prime is 1222020133. The reversal of 1222020103 is 3010202221.

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 1222020103 - 2⁵ = 1222020071 is a prime.

It is a super-2 number, since 2×1222020103² = 2986666264272261218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222020133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364425 + ... + 367762.

It is an arithmetic number, because the mean of its divisors is an integer number (305688490).

Almost surely, 2^1222020103 is an apocalyptic number.

1222020103 is a deficient number, since it is larger than the sum of its proper divisors (733857).

1222020103 is an equidigital number, since it uses as much as digits as its factorization.

1222020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733856.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1222020103 is about 34957.4041227320. The cubic root of 1222020103 is about 1069.1191699910.

Adding to 1222020103 its reverse (3010202221), we get a palindrome (4232222324).

It can be divided in two parts, 12220 and 20103, that added together give a palindrome (32323).

The spelling of 1222020103 in words is "one billion, two hundred twenty-two million, twenty thousand, one hundred three".