32121021213 has 12 divisors (see below), whose sum is σ = 46856408508. Its totient is φ = 21201993600.

The previous prime is 32121021203. The next prime is 32121021217. The reversal of 32121021213 is 31212012123.

It can be written as a sum of positive squares in 2 ways, for example, as 16754195844 + 15366825369 = 129438^2 + 123963^2 .

It is not a de Polignac number, because 32121021213 - 2²⁰ = 32119972637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32121021217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17667420 + ... + 17669237.

It is an arithmetic number, because the mean of its divisors is an integer number (3904700709).

Almost surely, 2^32121021213 is an apocalyptic number.

It is an amenable number.

32121021213 is a deficient number, since it is larger than the sum of its proper divisors (14735387295).

32121021213 is a wasteful number, since it uses less digits than its factorization.

32121021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35336764 (or 35336761 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 32121021213 its reverse (31212012123), we get a palindrome (63333033336).

The spelling of 32121021213 in words is "thirty-two billion, one hundred twenty-one million, twenty-one thousand, two hundred thirteen".