213112132024221 has 8 divisors (see below), whose sum is σ = 315721677072960. Its totient is φ = 142074754682796.

The previous prime is 213112132024213. The next prime is 213112132024229. The reversal of 213112132024221 is 122420231211312.

213112132024221 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 1 + 213 + 20 + 2 + 422 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (213112132024213) and next prime (213112132024229).

It is not a de Polignac number, because 213112132024221 - 2³ = 213112132024213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7893041926823 = 213112132024221 / (2 + 1 + 3 + 1 + 1 + 2 + 1 + 3 + 2 + 0 + 2 + 4 + 2 + 2 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213112132024229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3946520963385 + ... + 3946520963438.

It is an arithmetic number, because the mean of its divisors is an integer number (39465209634120).

Almost surely, 2^{213112132024221} is an apocalyptic number.

It is an amenable number.

213112132024221 is a deficient number, since it is larger than the sum of its proper divisors (102609545048739).

213112132024221 is an equidigital number, since it uses as much as digits as its factorization.

213112132024221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7893041926832 (or 7893041926826 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 213112132024221 its reverse (122420231211312), we get a palindrome (335532363235533).

The spelling of 213112132024221 in words is "two hundred thirteen trillion, one hundred twelve billion, one hundred thirty-two million, twenty-four thousand, two hundred twenty-one".