323212203121021 has 4 divisors (see below), whose sum is σ = 323344612874844. Its totient is φ = 323079793367200.

The previous prime is 323212203120913. The next prime is 323212203121033. The reversal of 323212203121021 is 120121302212323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 208920602095396 + 114291601025625 = 14454086^2 + 10690725^2 .

It is a cyclic number.

It is not a de Polignac number, because 323212203121021 - 2²⁵ = 323212169566589 is a prime.

It is a super-2 number, since 2×323212203121021² (a number of 30 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 (323212203121091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66204873250 + ... + 66204878131.

It is an arithmetic number, because the mean of its divisors is an integer number (80836153218711).

Almost surely, 2^{323212203121021} is an apocalyptic number.

It is an amenable number.

323212203121021 is a deficient number, since it is larger than the sum of its proper divisors (132409753823).

323212203121021 is a wasteful number, since it uses less digits than its factorization.

323212203121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132409753822.

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

Adding to 323212203121021 its reverse (120121302212323), we get a palindrome (443333505333344).

The spelling of 323212203121021 in words is "three hundred twenty-three trillion, two hundred twelve billion, two hundred three million, one hundred twenty-one thousand, twenty-one".