221102012210 has 16 divisors (see below), whose sum is σ = 399185995392. Its totient is φ = 88173610800.

The previous prime is 221102012207. The next prime is 221102012221. The reversal of 221102012210 is 12210201122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33395786 + ... + 33402405.

It is an arithmetic number, because the mean of its divisors is an integer number (24949124712).

Almost surely, 2^221102012210 is an apocalyptic number.

221102012210 is a deficient number, since it is larger than the sum of its proper divisors (178083983182).

221102012210 is a wasteful number, since it uses less digits than its factorization.

221102012210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66798529.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221102012210 its reverse (12210201122), we get a palindrome (233312213332).

The spelling of 221102012210 in words is "two hundred twenty-one billion, one hundred two million, twelve thousand, two hundred ten".