221010122222 has 16 divisors (see below), whose sum is σ = 338667020352. Its totient is φ = 108122481120.

The previous prime is 221010122173. The next prime is 221010122257. The reversal of 221010122222 is 222221010122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221010122222.

It is a congruent number.

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, 14333 + ... + 665000.

It is an arithmetic number, because the mean of its divisors is an integer number (21166688772).

Almost surely, 2^221010122222 is an apocalyptic number.

221010122222 is a deficient number, since it is larger than the sum of its proper divisors (117656898130).

221010122222 is a wasteful number, since it uses less digits than its factorization.

221010122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682843.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221010122222 its reverse (222221010122), we get a palindrome (443231132344).

The spelling of 221010122222 in words is "two hundred twenty-one billion, ten million, one hundred twenty-two thousand, two hundred twenty-two".