321203402223402 has 16 divisors (see below), whose sum is σ = 658075263092352. Its totient is φ = 104456390966880.

The previous prime is 321203402223371. The next prime is 321203402223421. The reversal of 321203402223402 is 204322204302123.

It is a self number, because there is not a number n which added to its sum of digits gives 321203402223402.

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, 652852443298 + ... + 652852443789.

It is an arithmetic number, because the mean of its divisors is an integer number (41129703943272).

Almost surely, 2^{321203402223402} is an apocalyptic number.

321203402223402 is an abundant number, since it is smaller than the sum of its proper divisors (336871860868950).

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

321203402223402 is a wasteful number, since it uses less digits than its factorization.

321203402223402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305704887133.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 321203402223402 its reverse (204322204302123), we get a palindrome (525525606525525).

The spelling of 321203402223402 in words is "three hundred twenty-one trillion, two hundred three billion, four hundred two million, two hundred twenty-three thousand, four hundred two".