1223899647013 has 4 divisors (see below), whose sum is σ = 1277112675168. Its totient is φ = 1170686618860.

The previous prime is 1223899647001. The next prime is 1223899647029. The reversal of 1223899647013 is 3107469983221.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223899647013 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 (1223899647083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26606514043 + ... + 26606514088.

It is an arithmetic number, because the mean of its divisors is an integer number (319278168792).

Almost surely, 2^{1223899647013} is an apocalyptic number.

It is an amenable number.

1223899647013 is a deficient number, since it is larger than the sum of its proper divisors (53213028155).

1223899647013 is an equidigital number, since it uses as much as digits as its factorization.

1223899647013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53213028154.

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 1223899647013 in words is "one trillion, two hundred twenty-three billion, eight hundred ninety-nine million, six hundred forty-seven thousand, thirteen".