1219244985013 has 4 divisors (see below), whose sum is σ = 1330085438208. Its totient is φ = 1108404531820.

The previous prime is 1219244984989. The next prime is 1219244985019. The reversal of 1219244985013 is 3105894429121.

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 not a de Polignac number, because 1219244985013 - 2³³ = 1210655050421 is a prime.

It is a super-2 number, since 2×1219244985013² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219244985019) 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, 55420226581 + ... + 55420226602.

It is an arithmetic number, because the mean of its divisors is an integer number (332521359552).

Almost surely, 2^{1219244985013} is an apocalyptic number.

It is an amenable number.

1219244985013 is a deficient number, since it is larger than the sum of its proper divisors (110840453195).

1219244985013 is a wasteful number, since it uses less digits than its factorization.

1219244985013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110840453194.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 1219244985013 in words is "one trillion, two hundred nineteen billion, two hundred forty-four million, nine hundred eighty-five thousand, thirteen".