1221322110313 has 8 divisors (see below), whose sum is σ = 1222118268768. Its totient is φ = 1220526081504.

The previous prime is 1221322110293. The next prime is 1221322110331. The reversal of 1221322110313 is 3130112231221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221322110313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221322110373) 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, 24837970 + ... + 24887092.

It is an arithmetic number, because the mean of its divisors is an integer number (152764783596).

Almost surely, 2^{1221322110313} is an apocalyptic number.

It is an amenable number.

1221322110313 is a deficient number, since it is larger than the sum of its proper divisors (796158455).

1221322110313 is a wasteful number, since it uses less digits than its factorization.

1221322110313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64823.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1221322110313 its reverse (3130112231221), we get a palindrome (4351434341534).

The spelling of 1221322110313 in words is "one trillion, two hundred twenty-one billion, three hundred twenty-two million, one hundred ten thousand, three hundred thirteen".