1221214212313 has 8 divisors (see below), whose sum is σ = 1285956320000. Its totient is φ = 1156518872208.

The previous prime is 1221214212287. The next prime is 1221214212359. The reversal of 1221214212313 is 3132124121221.

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-1221214212313 is a prime.

It is a super-2 number, since 2×1221214212313² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201214212313) 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, 11638281 + ... + 11742742.

It is an arithmetic number, because the mean of its divisors is an integer number (160744540000).

Almost surely, 2^{1221214212313} is an apocalyptic number.

It is an amenable number.

1221214212313 is a deficient number, since it is larger than the sum of its proper divisors (64742107687).

1221214212313 is a wasteful number, since it uses less digits than its factorization.

1221214212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23383791.

The product of its digits is 1152, while the sum is 25.

Adding to 1221214212313 its reverse (3132124121221), we get a palindrome (4353338333534).

The spelling of 1221214212313 in words is "one trillion, two hundred twenty-one billion, two hundred fourteen million, two hundred twelve thousand, three hundred thirteen".