221210011010 has 16 divisors (see below), whose sum is σ = 398400622200. Its totient is φ = 88434537216.

The previous prime is 221210011007. The next prime is 221210011031. The reversal of 221210011010 is 10110012122.

It can be written as a sum of positive squares in 4 ways, for example, as 216039969601 + 5170041409 = 464801^2 + 71903^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221210010982 and 221210011000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6164615 + ... + 6200394.

Almost surely, 2^221210011010 is an apocalyptic number.

221210011010 is a deficient number, since it is larger than the sum of its proper divisors (177190611190).

221210011010 is a wasteful number, since it uses less digits than its factorization.

221210011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12366805.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 221210011010 its reverse (10110012122), we get a palindrome (231320023132).

The spelling of 221210011010 in words is "two hundred twenty-one billion, two hundred ten million, eleven thousand, ten".