1223121110103 has 6 divisors (see below), whose sum is σ = 1766730492384. Its totient is φ = 815414073396.

The previous prime is 1223121110093. The next prime is 1223121110117. The reversal of 1223121110103 is 3010111213221.

It is a de Polignac number, because none of the positive numbers 2^k-1223121110103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223121130103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67951172775 + ... + 67951172792.

It is an arithmetic number, because the mean of its divisors is an integer number (294455082064).

Almost surely, 2^{1223121110103} is an apocalyptic number.

1223121110103 is a deficient number, since it is larger than the sum of its proper divisors (543609382281).

1223121110103 is a wasteful number, since it uses less digits than its factorization.

1223121110103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135902345573 (or 135902345570 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1223121110103 its reverse (3010111213221), we get a palindrome (4233232323324).

The spelling of 1223121110103 in words is "one trillion, two hundred twenty-three billion, one hundred twenty-one million, one hundred ten thousand, one hundred three".