221200212000122 has 16 divisors (see below), whose sum is σ = 331907497637760. Its totient is φ = 110564383354992.

The previous prime is 221200212000091. The next prime is 221200212000127. The reversal of 221200212000122 is 221000212002122.

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 221200212000122.

It is not an unprimeable number, because it can be changed into a prime (221200212000127) 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, 113530868 + ... + 115462800.

It is an arithmetic number, because the mean of its divisors is an integer number (20744218602360).

Almost surely, 2^{221200212000122} is an apocalyptic number.

221200212000122 is a deficient number, since it is larger than the sum of its proper divisors (110707285637638).

221200212000122 is a wasteful number, since it uses less digits than its factorization.

221200212000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950397.

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

Adding to 221200212000122 its reverse (221000212002122), we get a palindrome (442200424002244).

The spelling of 221200212000122 in words is "two hundred twenty-one trillion, two hundred billion, two hundred twelve million, one hundred twenty-two", and thus it is an aban number.