321140121445 has 48 divisors (see below), whose sum is σ = 479187403200. Its totient is φ = 204243586560.

The previous prime is 321140121403. The next prime is 321140121469. The reversal of 321140121445 is 544121041123.

It is a happy number.

It is not a de Polignac number, because 321140121445 - 2⁷ = 321140121317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 732600 + ... + 1085809.

It is an arithmetic number, because the mean of its divisors is an integer number (9983070900).

Almost surely, 2^321140121445 is an apocalyptic number.

It is an amenable number.

321140121445 is a deficient number, since it is larger than the sum of its proper divisors (158047281755).

321140121445 is a wasteful number, since it uses less digits than its factorization.

321140121445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818470 (or 1818457 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 321140121445 its reverse (544121041123), we get a palindrome (865261162568).

The spelling of 321140121445 in words is "three hundred twenty-one billion, one hundred forty million, one hundred twenty-one thousand, four hundred forty-five".