213232210331121 has 28 divisors (see below), whose sum is σ = 319703601783348. Its totient is φ = 142154123870304.

The previous prime is 213232210331081. The next prime is 213232210331131. The reversal of 213232210331121 is 121133012232312.

213232210331121 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 322 + 1 + 0 + 3 + 311 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 157013705921121 + 56218504410000 = 12530511^2 + 7497900^2 .

It is not a de Polignac number, because 213232210331121 - 2⁶ = 213232210331057 is a prime.

It is a super-2 number, since 2×213232210331121² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (213232210331131) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 184628971 + ... + 185780303.

Almost surely, 2^{213232210331121} is an apocalyptic number.

It is an amenable number.

213232210331121 is a deficient number, since it is larger than the sum of its proper divisors (106471391452227).

213232210331121 is an equidigital number, since it uses as much as digits as its factorization.

213232210331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405404 (or 1405389 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 213232210331121 its reverse (121133012232312), we get a palindrome (334365222563433).

The spelling of 213232210331121 in words is "two hundred thirteen trillion, two hundred thirty-two billion, two hundred ten million, three hundred thirty-one thousand, one hundred twenty-one".