221210233010 has 24 divisors (see below), whose sum is σ = 431163617220. Its totient is φ = 81677623872.

The previous prime is 221210233007. The next prime is 221210233021. The reversal of 221210233010 is 10332012122.

It can be written as a sum of positive squares in 6 ways, for example, as 21004994761 + 200205238249 = 144931^2 + 447443^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221210233010.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65445125 + ... + 65448504.

Almost surely, 2^221210233010 is an apocalyptic number.

221210233010 is a deficient number, since it is larger than the sum of its proper divisors (209953384210).

221210233010 is a wasteful number, since it uses less digits than its factorization.

221210233010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130893662 (or 130893649 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221210233010 its reverse (10332012122), we get a palindrome (231542245132).

The spelling of 221210233010 in words is "two hundred twenty-one billion, two hundred ten million, two hundred thirty-three thousand, ten".