1320322121243 has 8 divisors (see below), whose sum is σ = 1321847150400. Its totient is φ = 1318797246600.

The previous prime is 1320322121231. The next prime is 1320322121249. The reversal of 1320322121243 is 3421212230231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320322121243 - 2¹⁴ = 1320322104859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320322121249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33447668 + ... + 33487118.

It is an arithmetic number, because the mean of its divisors is an integer number (165230893800).

Almost surely, 2^{1320322121243} is an apocalyptic number.

1320322121243 is a deficient number, since it is larger than the sum of its proper divisors (1525029157).

1320322121243 is an equidigital number, since it uses as much as digits as its factorization.

1320322121243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77257.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 1320322121243 its reverse (3421212230231), we get a palindrome (4741534351474).

The spelling of 1320322121243 in words is "one trillion, three hundred twenty billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred forty-three".