1321020312302 has 16 divisors (see below), whose sum is σ = 2086172284560. Its totient is φ = 625641242112.

The previous prime is 1321020312221. The next prime is 1321020312317. The reversal of 1321020312302 is 2032130201231.

It is a super-2 number, since 2×1321020312302² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2693633 + ... + 3146060.

It is an arithmetic number, because the mean of its divisors is an integer number (130385767785).

Almost surely, 2^{1321020312302} is an apocalyptic number.

1321020312302 is a deficient number, since it is larger than the sum of its proper divisors (765151972258).

1321020312302 is a wasteful number, since it uses less digits than its factorization.

1321020312302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5845667.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1321020312302 its reverse (2032130201231), we get a palindrome (3353150513533).

The spelling of 1321020312302 in words is "one trillion, three hundred twenty-one billion, twenty million, three hundred twelve thousand, three hundred two".