322121345 has 48 divisors (see below), whose sum is σ = 509826240. Its totient is φ = 193124736.

The previous prime is 322121237. The next prime is 322121363. The reversal of 322121345 is 543121223.

It is not a de Polignac number, because 322121345 - 2¹⁸ = 321859201 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 322121345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57854 + ... + 63176.

It is an arithmetic number, because the mean of its divisors is an integer number (10621380).

Almost surely, 2^322121345 is an apocalyptic number.

322121345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

322121345 is a deficient number, since it is larger than the sum of its proper divisors (187704895).

322121345 is a wasteful number, since it uses less digits than its factorization.

322121345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5374 (or 5367 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 322121345 is about 17947.7392726772. The cubic root of 322121345 is about 685.4984880945.

Adding to 322121345 its reverse (543121223), we get a palindrome (865242568).

The spelling of 322121345 in words is "three hundred twenty-two million, one hundred twenty-one thousand, three hundred forty-five".