1213220323099 has 4 divisors (see below), whose sum is σ = 1213227134064. Its totient is φ = 1213213512136.

The previous prime is 1213220323097. The next prime is 1213220323163. The reversal of 1213220323099 is 9903230223121.

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 1213220323099 - 2¹ = 1213220323097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213220323093) 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, 3130912 + ... + 3497005.

It is an arithmetic number, because the mean of its divisors is an integer number (303306783516).

Almost surely, 2^{1213220323099} is an apocalyptic number.

1213220323099 is a deficient number, since it is larger than the sum of its proper divisors (6810965).

1213220323099 is an equidigital number, since it uses as much as digits as its factorization.

1213220323099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6810964.

The product of its (nonzero) digits is 34992, while the sum is 37.

The spelling of 1213220323099 in words is "one trillion, two hundred thirteen billion, two hundred twenty million, three hundred twenty-three thousand, ninety-nine".