1222120002013 has 4 divisors (see below), whose sum is σ = 1222127891260. Its totient is φ = 1222112112768.

The previous prime is 1222120001969. The next prime is 1222120002031. The reversal of 1222120002013 is 3102000212221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 839134777849 + 382985224164 = 916043^2 + 618858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222120002013 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 (1222120002083) 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, 3707508 + ... + 4023661.

It is an arithmetic number, because the mean of its divisors is an integer number (305531972815).

Almost surely, 2^{1222120002013} is an apocalyptic number.

It is an amenable number.

1222120002013 is a deficient number, since it is larger than the sum of its proper divisors (7889247).

1222120002013 is an equidigital number, since it uses as much as digits as its factorization.

1222120002013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889246.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1222120002013 its reverse (3102000212221), we get a palindrome (4324120214234).

The spelling of 1222120002013 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, two thousand, thirteen".