223421100 has 72 divisors (see below), whose sum is σ = 738786048. Its totient is φ = 51067200.

The previous prime is 223421087. The next prime is 223421153. The reversal of 223421100 is 1124322.

223421100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 223421100.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51096 + ... + 55295.

Almost surely, 2^223421100 is an apocalyptic number.

223421100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223421100 is an abundant number, since it is smaller than the sum of its proper divisors (515364948).

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

223421100 is a wasteful number, since it uses less digits than its factorization.

223421100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106415 (or 106408 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 223421100 is about 14947.2773440517. The cubic root of 223421100 is about 606.7941640551.

Adding to 223421100 its reverse (1124322), we get a palindrome (224545422).

The spelling of 223421100 in words is "two hundred twenty-three million, four hundred twenty-one thousand, one hundred".