1123404212 has 24 divisors (see below), whose sum is σ = 2307535104. Its totient is φ = 468446112.

The previous prime is 1123404187. The next prime is 1123404221. The reversal of 1123404212 is 2124043211.

It is a super-3 number, since 3×1123404212³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541148 + ... + 543219.

It is an arithmetic number, because the mean of its divisors is an integer number (96147296).

Almost surely, 2^1123404212 is an apocalyptic number.

It is an amenable number.

1123404212 is an abundant number, since it is smaller than the sum of its proper divisors (1184130892).

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

1123404212 is a wasteful number, since it uses less digits than its factorization.

1123404212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084415 (or 1084413 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1123404212 is about 33517.2226176335. Note that the first 3 decimals coincide. The cubic root of 1123404212 is about 1039.5499198922.

Adding to 1123404212 its reverse (2124043211), we get a palindrome (3247447423).

The spelling of 1123404212 in words is "one billion, one hundred twenty-three million, four hundred four thousand, two hundred twelve".