1343001331221 has 16 divisors (see below), whose sum is σ = 2038389373440. Its totient is φ = 778551495920.

The previous prime is 1343001331211. The next prime is 1343001331247. The reversal of 1343001331221 is 1221331003431.

It is not a de Polignac number, because 1343001331221 - 2¹³ = 1343001323029 is a prime.

It is a super-2 number, since 2×1343001331221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1343001331191 and 1343001331200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343001331211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 884716851 + ... + 884718368.

It is an arithmetic number, because the mean of its divisors is an integer number (127399335840).

Almost surely, 2^{1343001331221} is an apocalyptic number.

1343001331221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1343001331221 is a deficient number, since it is larger than the sum of its proper divisors (695388042219).

1343001331221 is a wasteful number, since it uses less digits than its factorization.

1343001331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769435256.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1343001331221 its reverse (1221331003431), we get a palindrome (2564332334652).

The spelling of 1343001331221 in words is "one trillion, three hundred forty-three billion, one million, three hundred thirty-one thousand, two hundred twenty-one".