221122201210 has 32 divisors (see below), whose sum is σ = 433415577600. Its totient is φ = 80904237120.

The previous prime is 221122201199. The next prime is 221122201211. The reversal of 221122201210 is 12102221122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221122201211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20060026 + ... + 20071045.

It is an arithmetic number, because the mean of its divisors is an integer number (13544236800).

Almost surely, 2^221122201210 is an apocalyptic number.

221122201210 is a deficient number, since it is larger than the sum of its proper divisors (212293376390).

221122201210 is a wasteful number, since it uses less digits than its factorization.

221122201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40131126.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221122201210 its reverse (12102221122), we get a palindrome (233224422332).

The spelling of 221122201210 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred one thousand, two hundred ten".