1123221323203 has 24 divisors (see below), whose sum is σ = 1339879377408. Its totient is φ = 938339485776.

The previous prime is 1123221323177. The next prime is 1123221323209. The reversal of 1123221323203 is 3023231223211.

It is not a de Polignac number, because 1123221323203 - 2⁵ = 1123221323171 is a prime.

It is a super-2 number, since 2×1123221323203² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123221323209) 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 23 ways as a sum of consecutive naturals, for example, 399850 + ... + 1551232.

It is an arithmetic number, because the mean of its divisors is an integer number (55828307392).

Almost surely, 2^{1123221323203} is an apocalyptic number.

1123221323203 is a deficient number, since it is larger than the sum of its proper divisors (216658054205).

1123221323203 is a wasteful number, since it uses less digits than its factorization.

1123221323203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151903 (or 1151896 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1123221323203 its reverse (3023231223211), we get a palindrome (4146452546414).

The spelling of 1123221323203 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred three".