1212320051013 has 4 divisors (see below), whose sum is σ = 1616426734688. Its totient is φ = 808213367340.

The previous prime is 1212320051003. The next prime is 1212320051081. The reversal of 1212320051013 is 3101500232121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1212320051013 - 2³⁷ = 1074881097541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212320051003) 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, 202053341833 + ... + 202053341838.

It is an arithmetic number, because the mean of its divisors is an integer number (404106683672).

Almost surely, 2^{1212320051013} is an apocalyptic number.

It is an amenable number.

1212320051013 is a deficient number, since it is larger than the sum of its proper divisors (404106683675).

1212320051013 is an equidigital number, since it uses as much as digits as its factorization.

1212320051013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404106683674.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 1212320051013 its reverse (3101500232121), we get a palindrome (4313820283134).

The spelling of 1212320051013 in words is "one trillion, two hundred twelve billion, three hundred twenty million, fifty-one thousand, thirteen".