321440213122 has 16 divisors (see below), whose sum is σ = 554225573952. Its totient is φ = 136963789200.

The previous prime is 321440213117. The next prime is 321440213131. The reversal of 321440213122 is 221312044123.

It is a super-2 number, since 2×321440213122² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66356004 + ... + 66360847.

It is an arithmetic number, because the mean of its divisors is an integer number (34639098372).

Almost surely, 2^321440213122 is an apocalyptic number.

321440213122 is a deficient number, since it is larger than the sum of its proper divisors (232785360830).

321440213122 is a wasteful number, since it uses less digits than its factorization.

321440213122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132717033.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 321440213122 its reverse (221312044123), we get a palindrome (542752257245).

The spelling of 321440213122 in words is "three hundred twenty-one billion, four hundred forty million, two hundred thirteen thousand, one hundred twenty-two".