1321343433201 has 16 divisors (see below), whose sum is σ = 2005517306880. Its totient is φ = 765996192720.

The previous prime is 1321343433143. The next prime is 1321343433211. The reversal of 1321343433201 is 1023343431231.

It is not a de Polignac number, because 1321343433201 - 2¹⁰ = 1321343432177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321343433211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 870449461 + ... + 870450978.

It is an arithmetic number, because the mean of its divisors is an integer number (125344831680).

Almost surely, 2^{1321343433201} is an apocalyptic number.

1321343433201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1321343433201 is a deficient number, since it is larger than the sum of its proper divisors (684173873679).

1321343433201 is a wasteful number, since it uses less digits than its factorization.

1321343433201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740900476.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 1321343433201 its reverse (1023343431231), we get a palindrome (2344686864432).

The spelling of 1321343433201 in words is "one trillion, three hundred twenty-one billion, three hundred forty-three million, four hundred thirty-three thousand, two hundred one".