1223211131103 has 12 divisors (see below), whose sum is σ = 1766056308360. Its totient is φ = 752745311136.

The previous prime is 1223211131039. The next prime is 1223211131141. The reversal of 1223211131103 is 3011311123221.

It is not a de Polignac number, because 1223211131103 - 2⁶ = 1223211131039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223211131103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223211131143) 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 11 ways as a sum of consecutive naturals, for example, 1206322108 + ... + 1206323121.

It is an arithmetic number, because the mean of its divisors is an integer number (147171359030).

Almost surely, 2^{1223211131103} is an apocalyptic number.

1223211131103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1223211131103 is a deficient number, since it is larger than the sum of its proper divisors (542845177257).

1223211131103 is a wasteful number, since it uses less digits than its factorization.

1223211131103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2412645258 (or 2412645245 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1223211131103 its reverse (3011311123221), we get a palindrome (4234522254324).

The spelling of 1223211131103 in words is "one trillion, two hundred twenty-three billion, two hundred eleven million, one hundred thirty-one thousand, one hundred three".