221110122022210 has 16 divisors (see below), whose sum is σ = 397998958543416. Its totient is φ = 88443884608128.

The previous prime is 221110122022189. The next prime is 221110122022217. The reversal of 221110122022210 is 12220221011122.

It can be written as a sum of positive squares in 4 ways, for example, as 169445178786321 + 51664943235889 = 13017111^2 + 7187833^2 .

It is not an unprimeable number, because it can be changed into a prime (221110122022217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14793219 + ... + 25711078.

Almost surely, 2^{221110122022210} is an apocalyptic number.

221110122022210 is a deficient number, since it is larger than the sum of its proper divisors (176888836521206).

221110122022210 is a wasteful number, since it uses less digits than its factorization.

221110122022210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41050197.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221110122022210 its reverse (12220221011122), we get a palindrome (233330343033332).

The spelling of 221110122022210 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred twenty-two million, twenty-two thousand, two hundred ten".