1323331213021 has 8 divisors (see below), whose sum is σ = 1333353591360. Its totient is φ = 1313316006528.

The previous prime is 1323331213003. The next prime is 1323331213049. The reversal of 1323331213021 is 1203121333231.

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 1323331213021 - 2²¹ = 1323329115869 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 (1323331213051) 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, 1422241 + ... + 2160886.

It is an arithmetic number, because the mean of its divisors is an integer number (166669198920).

Almost surely, 2^{1323331213021} is an apocalyptic number.

It is an amenable number.

1323331213021 is a deficient number, since it is larger than the sum of its proper divisors (10022378339).

1323331213021 is a wasteful number, since it uses less digits than its factorization.

1323331213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3585923.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1323331213021 its reverse (1203121333231), we get a palindrome (2526452546252).

The spelling of 1323331213021 in words is "one trillion, three hundred twenty-three billion, three hundred thirty-one million, two hundred thirteen thousand, twenty-one".