1123430420200 has 96 divisors (see below), whose sum is σ = 2853665746560. Its totient is φ = 407912601600.

The previous prime is 1123430420197. The next prime is 1123430420209. The reversal of 1123430420200 is 20240343211.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1123430420209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1101217 + ... + 1859983.

It is an arithmetic number, because the mean of its divisors is an integer number (29725684860).

Almost surely, 2^{1123430420200} is an apocalyptic number.

1123430420200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123430420200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1426832873280).

1123430420200 is an abundant number, since it is smaller than the sum of its proper divisors (1730235326360).

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

1123430420200 is a wasteful number, since it uses less digits than its factorization.

1123430420200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759467 (or 759458 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1123430420200 its reverse (20240343211), we get a palindrome (1143670763411).

The spelling of 1123430420200 in words is "one trillion, one hundred twenty-three billion, four hundred thirty million, four hundred twenty thousand, two hundred".