1221313002113 has 8 divisors (see below), whose sum is σ = 1224763742400. Its totient is φ = 1217863464048.

The previous prime is 1221313002073. The next prime is 1221313002121. The reversal of 1221313002113 is 3112003131221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221313002113 - 2¹⁰ = 1221313001089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1221313002163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1753868 + ... + 2349186.

It is an arithmetic number, because the mean of its divisors is an integer number (153095467800).

Almost surely, 2^{1221313002113} is an apocalyptic number.

It is an amenable number.

1221313002113 is a deficient number, since it is larger than the sum of its proper divisors (3450740287).

1221313002113 is an equidigital number, since it uses as much as digits as its factorization.

1221313002113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601111.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1221313002113 its reverse (3112003131221), we get a palindrome (4333316133334).

The spelling of 1221313002113 in words is "one trillion, two hundred twenty-one billion, three hundred thirteen million, two thousand, one hundred thirteen".