221224434202 has 4 divisors (see below), whose sum is σ = 331836651306. Its totient is φ = 110612217100.

The previous prime is 221224434181. The next prime is 221224434217. The reversal of 221224434202 is 202434422122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 213269399721 + 7955034481 = 461811^2 + 89191^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55306108549 + ... + 55306108552.

Almost surely, 2^221224434202 is an apocalyptic number.

221224434202 is a deficient number, since it is larger than the sum of its proper divisors (110612217104).

221224434202 is a wasteful number, since it uses less digits than its factorization.

221224434202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110612217103.

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

Adding to 221224434202 its reverse (202434422122), we get a palindrome (423658856324).

The spelling of 221224434202 in words is "two hundred twenty-one billion, two hundred twenty-four million, four hundred thirty-four thousand, two hundred two".