1123230511100 has 36 divisors (see below), whose sum is σ = 2438384547984. Its totient is φ = 449112602880.

The previous prime is 1123230511093. The next prime is 1123230511103. The reversal of 1123230511100 is 11150323211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123230511103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1993469 + ... + 2494068.

Almost surely, 2^{1123230511100} is an apocalyptic number.

1123230511100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1123230511100 is an abundant number, since it is smaller than the sum of its proper divisors (1315154036884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123230511100 is a wasteful number, since it uses less digits than its factorization.

1123230511100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490054 (or 4490047 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 1123230511100 its reverse (11150323211), we get a palindrome (1134380834311).

The spelling of 1123230511100 in words is "one trillion, one hundred twenty-three billion, two hundred thirty million, five hundred eleven thousand, one hundred".