221000222000122 has 4 divisors (see below), whose sum is σ = 331500333000186. Its totient is φ = 110500111000060.

The previous prime is 221000222000113. The next prime is 221000222000123.

221000222000122 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 121000242000121 + 99999980000001 = 11000011^2 + 9999999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221000222000096 and 221000222000105.

It is not an unprimeable number, because it can be changed into a prime (221000222000123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55250055500029 + ... + 55250055500032.

Almost surely, 2^{221000222000122} is an apocalyptic number.

221000222000122 is a deficient number, since it is larger than the sum of its proper divisors (110500111000064).

221000222000122 is a wasteful number, since it uses less digits than its factorization.

221000222000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110500111000063.

The product of its (nonzero) digits is 128, while the sum is 16.

The spelling of 221000222000122 in words is "two hundred twenty-one trillion, two hundred twenty-two million, one hundred twenty-two", and thus it is an aban number.