11123213400 has 144 divisors (see below), whose sum is σ = 40229039760. Its totient is φ = 2738016000.

The previous prime is 11123213369. The next prime is 11123213461. The reversal of 11123213400 is 431232111.

11123213400 is a `hidden beast` number, since 1 + 1 + 1 + 2 + 321 + 340 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 214276 + ... + 261075.

Almost surely, 2^11123213400 is an apocalyptic number.

11123213400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11123213400 is an abundant number, since it is smaller than the sum of its proper divisors (29105826360).

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

11123213400 is a wasteful number, since it uses less digits than its factorization.

11123213400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475386 (or 475374 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11123213400 its reverse (431232111), we get a palindrome (11554445511).

The spelling of 11123213400 in words is "eleven billion, one hundred twenty-three million, two hundred thirteen thousand, four hundred".