221332312210 has 32 divisors (see below), whose sum is σ = 404063510400. Its totient is φ = 87274293120.

The previous prime is 221332312193. The next prime is 221332312231. The reversal of 221332312210 is 12213233122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6898686 + ... + 6930694.

It is an arithmetic number, because the mean of its divisors is an integer number (12626984700).

Almost surely, 2^221332312210 is an apocalyptic number.

221332312210 is a deficient number, since it is larger than the sum of its proper divisors (182731198190).

221332312210 is a wasteful number, since it uses less digits than its factorization.

221332312210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41826.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221332312210 its reverse (12213233122), we get a palindrome (233545545332).

The spelling of 221332312210 in words is "two hundred twenty-one billion, three hundred thirty-two million, three hundred twelve thousand, two hundred ten".