321223221220002 has 16 divisors (see below), whose sum is σ = 642446673117312. Its totient is φ = 107074368627120.

The previous prime is 321223221219991. The next prime is 321223221220021. The reversal of 321223221220002 is 200022122322123.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12351927 + ... + 28196037.

It is an arithmetic number, because the mean of its divisors is an integer number (40152917069832).

Almost surely, 2^{321223221220002} is an apocalyptic number.

321223221220002 is an abundant number, since it is smaller than the sum of its proper divisors (321223451897310).

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

321223221220002 is a wasteful number, since it uses less digits than its factorization.

321223221220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19223113.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 321223221220002 its reverse (200022122322123), we get a palindrome (521245343542125).

The spelling of 321223221220002 in words is "three hundred twenty-one trillion, two hundred twenty-three billion, two hundred twenty-one million, two hundred twenty thousand, two".