1223421103 has 4 divisors (see below), whose sum is σ = 1223847760. Its totient is φ = 1222994448.

The previous prime is 1223421061. The next prime is 1223421119. The reversal of 1223421103 is 3011243221.

It is a happy number.

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 1223421103 - 2¹⁷ = 1223290031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223421203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208998 + ... + 214771.

It is an arithmetic number, because the mean of its divisors is an integer number (305961940).

Almost surely, 2^1223421103 is an apocalyptic number.

1223421103 is a deficient number, since it is larger than the sum of its proper divisors (426657).

1223421103 is an equidigital number, since it uses as much as digits as its factorization.

1223421103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426656.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1223421103 is about 34977.4370559079. The cubic root of 1223421103 is about 1069.5275822349.

Adding to 1223421103 its reverse (3011243221), we get a palindrome (4234664324).

The spelling of 1223421103 in words is "one billion, two hundred twenty-three million, four hundred twenty-one thousand, one hundred three".