221424232204 has 12 divisors (see below), whose sum is σ = 442848464464. Its totient is φ = 94896099504.

The previous prime is 221424232199. The next prime is 221424232217. The reversal of 221424232204 is 402232424122.

It is a happy number.

221424232204 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 7908008293 = 221424232204 / (2 + 2 + 1 + 4 + 2 + 4 + 2 + 3 + 2 + 2 + 0 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3954004119 + ... + 3954004174.

Almost surely, 2^221424232204 is an apocalyptic number.

It is an amenable number.

221424232204 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221424232204 is a wasteful number, since it uses less digits than its factorization.

221424232204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908008304 (or 7908008302 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 221424232204 its reverse (402232424122), we get a palindrome (623656656326).

It can be divided in two parts, 221424 and 232204, that added together give a triangular number (453628 = T₉₅₂).

The spelling of 221424232204 in words is "two hundred twenty-one billion, four hundred twenty-four million, two hundred thirty-two thousand, two hundred four".