221243323342122 has 12 divisors (see below), whose sum is σ = 479360533907970. Its totient is φ = 73747774447368.

The previous prime is 221243323342117. The next prime is 221243323342193.

221243323342122 is a `hidden beast` number, since 2 + 2 + 1 + 2 + 433 + 2 + 3 + 3 + 4 + 212 + 2 = 666.

221243323342122 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 170321840649081 + 50921482693041 = 13050741^2 + 7135929^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6145647870597 + ... + 6145647870632.

Almost surely, 2^{221243323342122} is an apocalyptic number.

221243323342122 is an abundant number, since it is smaller than the sum of its proper divisors (258117210565848).

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

221243323342122 is a wasteful number, since it uses less digits than its factorization.

221243323342122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12291295741237 (or 12291295741234 counting only the distinct ones).

The product of its digits is 165888, while the sum is 36.

The spelling of 221243323342122 in words is "two hundred twenty-one trillion, two hundred forty-three billion, three hundred twenty-three million, three hundred forty-two thousand, one hundred twenty-two".