221222010122 has 8 divisors (see below), whose sum is σ = 331840914372. Its totient is φ = 110608372000.

The previous prime is 221222010059. The next prime is 221222010193. The reversal of 221222010122 is 221010222122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 207936912001 + 13285098121 = 456001^2 + 115261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 221222010122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1209779 + ... + 1380582.

Almost surely, 2^221222010122 is an apocalyptic number.

221222010122 is a deficient number, since it is larger than the sum of its proper divisors (110618904250).

221222010122 is a wasteful number, since it uses less digits than its factorization.

221222010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633064.

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

Adding to 221222010122 its reverse (221010222122), we get a palindrome (442232232244).

The spelling of 221222010122 in words is "two hundred twenty-one billion, two hundred twenty-two million, ten thousand, one hundred twenty-two".