1221313404301 has 8 divisors (see below), whose sum is σ = 1225970714520. Its totient is φ = 1216656962112.

The previous prime is 1221313404277. The next prime is 1221313404329. The reversal of 1221313404301 is 1034043131221.

It can be written as a sum of positive squares in 4 ways, for example, as 113199275401 + 1108114128900 = 336451^2 + 1052670^2 .

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 1221313404301 - 2²⁵ = 1221279849869 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 (1221313404601) 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, 2675671 + ... + 3098683.

It is an arithmetic number, because the mean of its divisors is an integer number (153246339315).

Almost surely, 2^{1221313404301} is an apocalyptic number.

It is an amenable number.

1221313404301 is a deficient number, since it is larger than the sum of its proper divisors (4657310219).

1221313404301 is a wasteful number, since it uses less digits than its factorization.

1221313404301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434015.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1221313404301 its reverse (1034043131221), we get a palindrome (2255356535522).

The spelling of 1221313404301 in words is "one trillion, two hundred twenty-one billion, three hundred thirteen million, four hundred four thousand, three hundred one".