1321032412043 has 4 divisors (see below), whose sum is σ = 1351754096088. Its totient is φ = 1290310728000.

The previous prime is 1321032412027. The next prime is 1321032412057. The reversal of 1321032412043 is 3402142301231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1321032412043 - 2⁴ = 1321032412027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321032412543) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15360841958 + ... + 15360842043.

It is an arithmetic number, because the mean of its divisors is an integer number (337938524022).

Almost surely, 2^{1321032412043} is an apocalyptic number.

1321032412043 is a deficient number, since it is larger than the sum of its proper divisors (30721684045).

1321032412043 is an equidigital number, since it uses as much as digits as its factorization.

1321032412043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30721684044.

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

Adding to 1321032412043 its reverse (3402142301231), we get a palindrome (4723174713274).

The spelling of 1321032412043 in words is "one trillion, three hundred twenty-one billion, thirty-two million, four hundred twelve thousand, forty-three".