321221010122 has 8 divisors (see below), whose sum is σ = 485348533956. Its totient is φ = 159438165472.

The previous prime is 321221010059. The next prime is 321221010133. The reversal of 321221010122 is 221010122123.

It can be written as a sum of positive squares in 2 ways, for example, as 303566838961 + 17654171161 = 550969^2 + 132869^2 .

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 321221010122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586169453 + ... + 586170000.

Almost surely, 2^321221010122 is an apocalyptic number.

321221010122 is a deficient number, since it is larger than the sum of its proper divisors (164127523834).

321221010122 is a wasteful number, since it uses less digits than its factorization.

321221010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172339592.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 321221010122 its reverse (221010122123), we get a palindrome (542231132245).

The spelling of 321221010122 in words is "three hundred twenty-one billion, two hundred twenty-one million, ten thousand, one hundred twenty-two".