221321242123122 has 8 divisors (see below), whose sum is σ = 442642484246256. Its totient is φ = 73773747374372.

The previous prime is 221321242123073. The next prime is 221321242123229.

It is a happy number.

221321242123122 is nontrivially palindromic in base 10.

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

221321242123122 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 221321242123122.

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, 18443436843588 + ... + 18443436843599.

It is an arithmetic number, because the mean of its divisors is an integer number (55330310530782).

Almost surely, 2^{221321242123122} is an apocalyptic number.

221321242123122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221321242123122 is a wasteful number, since it uses less digits than its factorization.

221321242123122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36886873687192.

The product of its digits is 9216, while the sum is 30.

The spelling of 221321242123122 in words is "two hundred twenty-one trillion, three hundred twenty-one billion, two hundred forty-two million, one hundred twenty-three thousand, one hundred twenty-two".