1123813228109 has 48 divisors (see below), whose sum is σ = 1438508865024. Its totient is φ = 868700152320.

The previous prime is 1123813228099. The next prime is 1123813228163. The reversal of 1123813228109 is 9018223183211.

It is not a de Polignac number, because 1123813228109 - 2³⁶ = 1055093751373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123813228409) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 809744 + ... + 1703910.

It is an arithmetic number, because the mean of its divisors is an integer number (29968934688).

Almost surely, 2^{1123813228109} is an apocalyptic number.

It is an amenable number.

1123813228109 is a deficient number, since it is larger than the sum of its proper divisors (314695636915).

1123813228109 is a wasteful number, since it uses less digits than its factorization.

1123813228109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894266 (or 894255 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 1123813228109 in words is "one trillion, one hundred twenty-three billion, eight hundred thirteen million, two hundred twenty-eight thousand, one hundred nine".