221221332223330 has 64 divisors (see below), whose sum is σ = 399291955920000. Its totient is φ = 88245936649728.

The previous prime is 221221332223321. The next prime is 221221332223477. The reversal of 221221332223330 is 33322233122122.

It is a junction number, because it is equal to n+sod(n) for n = 221221332223292 and 221221332223301.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24286012816 + ... + 24286021924.

It is an arithmetic number, because the mean of its divisors is an integer number (6238936811250).

Almost surely, 2^{221221332223330} is an apocalyptic number.

221221332223330 is a deficient number, since it is larger than the sum of its proper divisors (178070623696670).

221221332223330 is a wasteful number, since it uses less digits than its factorization.

221221332223330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14131.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 221221332223330 its reverse (33322233122122), we get a palindrome (254543565345452).

The spelling of 221221332223330 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, three hundred thirty-two million, two hundred twenty-three thousand, three hundred thirty".