213232032221121 has 6 divisors (see below), whose sum is σ = 308001824319410. Its totient is φ = 142154688147408.

The previous prime is 213232032221063. The next prime is 213232032221123. The reversal of 213232032221121 is 121122230232312.

213232032221121 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 320 + 3 + 222 + 112 + 1 = 666.

213232032221121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 143351795107521 + 69880237113600 = 11972961^2 + 8359440^2 .

It is not a de Polignac number, because 213232032221121 - 2⁶ = 213232032221057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213232032221123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11846224012276 + ... + 11846224012293.

Almost surely, 2^{213232032221121} is an apocalyptic number.

It is an amenable number.

213232032221121 is a deficient number, since it is larger than the sum of its proper divisors (94769792098289).

213232032221121 is a wasteful number, since it uses less digits than its factorization.

213232032221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23692448024575 (or 23692448024572 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 213232032221121 its reverse (121122230232312), we get a palindrome (334354262453433).

The spelling of 213232032221121 in words is "two hundred thirteen trillion, two hundred thirty-two billion, thirty-two million, two hundred twenty-one thousand, one hundred twenty-one".