1321402220324 has 24 divisors (see below), whose sum is σ = 2451776076288. Its totient is φ = 620999388800.

The previous prime is 1321402220317. The next prime is 1321402220399. The reversal of 1321402220324 is 4230222041231.

It is a super-2 number, since 2×1321402220324² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1321402220293 and 1321402220302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13026452 + ... + 13127499.

It is an arithmetic number, because the mean of its divisors is an integer number (102157336512).

Almost surely, 2^{1321402220324} is an apocalyptic number.

It is an amenable number.

1321402220324 is a deficient number, since it is larger than the sum of its proper divisors (1130373855964).

1321402220324 is a wasteful number, since it uses less digits than its factorization.

1321402220324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26154715 (or 26154713 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 1321402220324 its reverse (4230222041231), we get a palindrome (5551624261555).

The spelling of 1321402220324 in words is "one trillion, three hundred twenty-one billion, four hundred two million, two hundred twenty thousand, three hundred twenty-four".