1320002313221 has 16 divisors (see below), whose sum is σ = 1418093107200. Its totient is φ = 1224981769968.

The previous prime is 1320002313143. The next prime is 1320002313233. The reversal of 1320002313221 is 1223132000231.

It is a cyclic number.

It is not a de Polignac number, because 1320002313221 - 2³⁰ = 1318928571397 is a prime.

It is a super-2 number, since 2×1320002313221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320002313193 and 1320002313202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320002313281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2668565 + ... + 3124298.

It is an arithmetic number, because the mean of its divisors is an integer number (88630819200).

Almost surely, 2^{1320002313221} is an apocalyptic number.

It is an amenable number.

1320002313221 is a deficient number, since it is larger than the sum of its proper divisors (98090793979).

1320002313221 is a wasteful number, since it uses less digits than its factorization.

1320002313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5793128.

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

Adding to 1320002313221 its reverse (1223132000231), we get a palindrome (2543134313452).

The spelling of 1320002313221 in words is "one trillion, three hundred twenty billion, two million, three hundred thirteen thousand, two hundred twenty-one".