321404212321140 has 96 divisors (see below), whose sum is σ = 971259611769216. Its totient is φ = 78943267146240.

The previous prime is 321404212321139. The next prime is 321404212321193. The reversal of 321404212321140 is 41123212404123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 321404212321098 and 321404212321107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446556562 + ... + 447275721.

It is an arithmetic number, because the mean of its divisors is an integer number (10117287622596).

Almost surely, 2^{321404212321140} is an apocalyptic number.

321404212321140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321404212321140 is an abundant number, since it is smaller than the sum of its proper divisors (649855399448076).

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

321404212321140 is a wasteful number, since it uses less digits than its factorization.

321404212321140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893832769 (or 893832767 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 321404212321140 its reverse (41123212404123), we get a palindrome (362527424725263).

The spelling of 321404212321140 in words is "three hundred twenty-one trillion, four hundred four billion, two hundred twelve million, three hundred twenty-one thousand, one hundred forty".