221233221010 has 16 divisors (see below), whose sum is σ = 398297773656. Its totient is φ = 88475960448.

The previous prime is 221233221007. The next prime is 221233221043. The reversal of 221233221010 is 10122332122.

It can be written as a sum of positive squares in 4 ways, for example, as 67380218929 + 153853002081 = 259577^2 + 392241^2 .

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, 2112309 + ... + 2214568.

Almost surely, 2^221233221010 is an apocalyptic number.

221233221010 is a deficient number, since it is larger than the sum of its proper divisors (177064552646).

221233221010 is a wasteful number, since it uses less digits than its factorization.

221233221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331997.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221233221010 its reverse (10122332122), we get a palindrome (231355553132).

The spelling of 221233221010 in words is "two hundred twenty-one billion, two hundred thirty-three million, two hundred twenty-one thousand, ten".