213032013001221 has 16 divisors (see below), whose sum is σ = 284154620166144. Its totient is φ = 141965384378544.

The previous prime is 213032013001217. The next prime is 213032013001243. The reversal of 213032013001221 is 122100310230312.

It is not a de Polignac number, because 213032013001221 - 2² = 213032013001217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213032013001261) 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, 80499136 + ... + 83103398.

It is an arithmetic number, because the mean of its divisors is an integer number (17759663760384).

Almost surely, 2^{213032013001221} is an apocalyptic number.

It is an amenable number.

213032013001221 is a deficient number, since it is larger than the sum of its proper divisors (71122607164923).

213032013001221 is a wasteful number, since it uses less digits than its factorization.

213032013001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615000.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 213032013001221 its reverse (122100310230312), we get a palindrome (335132323231533).

The spelling of 213032013001221 in words is "two hundred thirteen trillion, thirty-two billion, thirteen million, one thousand, two hundred twenty-one".