1321133322221 has 8 divisors (see below), whose sum is σ = 1378789827840. Its totient is φ = 1263494810512.

The previous prime is 1321133322209. The next prime is 1321133322277. The reversal of 1321133322221 is 1222233311231.

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 1321133322221 - 2²² = 1321129127917 is a prime.

It is a super-2 number, since 2×1321133322221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321133322521) 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, 4348325 + ... + 4642218.

It is an arithmetic number, because the mean of its divisors is an integer number (172348728480).

Almost surely, 2^{1321133322221} is an apocalyptic number.

It is an amenable number.

1321133322221 is a deficient number, since it is larger than the sum of its proper divisors (57656505619).

1321133322221 is an equidigital number, since it uses as much as digits as its factorization.

1321133322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8996955.

The product of its digits is 2592, while the sum is 26.

Adding to 1321133322221 its reverse (1222233311231), we get a palindrome (2543366633452).

The spelling of 1321133322221 in words is "one trillion, three hundred twenty-one billion, one hundred thirty-three million, three hundred twenty-two thousand, two hundred twenty-one".