321221012222242 has 16 divisors (see below), whose sum is σ = 535552013518272. Its totient is φ = 143254653820720.

The previous prime is 321221012222219. The next prime is 321221012222303. The reversal of 321221012222242 is 242222210122123.

It is a self number, because there is not a number n which added to its sum of digits gives 321221012222242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137744858278 + ... + 137744860609.

It is an arithmetic number, because the mean of its divisors is an integer number (33472000844892).

Almost surely, 2^{321221012222242} is an apocalyptic number.

321221012222242 is a deficient number, since it is larger than the sum of its proper divisors (214331001296030).

321221012222242 is a wasteful number, since it uses less digits than its factorization.

321221012222242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275489718953.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 321221012222242 its reverse (242222210122123), we get a palindrome (563443222344365).

It can be divided in two parts, 32122101 and 2222242, that added together give a palindrome (34344343).

The spelling of 321221012222242 in words is "three hundred twenty-one trillion, two hundred twenty-one billion, twelve million, two hundred twenty-two thousand, two hundred forty-two".