24213132221 has 2 divisors, whose sum is σ = 24213132222. Its totient is φ = 24213132220.

The previous prime is 24213132157. The next prime is 24213132253. The reversal of 24213132221 is 12223131242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13113456196 + 11099676025 = 114514^2 + 105355^2 .

It is a cyclic number.

It is not a de Polignac number, because 24213132221 - 2⁶ = 24213132157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24213132271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12106566110 + 12106566111.

It is an arithmetic number, because the mean of its divisors is an integer number (12106566111).

Almost surely, 2^24213132221 is an apocalyptic number.

It is an amenable number.

24213132221 is a deficient number, since it is larger than the sum of its proper divisors (1).

24213132221 is an equidigital number, since it uses as much as digits as its factorization.

24213132221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

Adding to 24213132221 its reverse (12223131242), we get a palindrome (36436263463).

The spelling of 24213132221 in words is "twenty-four billion, two hundred thirteen million, one hundred thirty-two thousand, two hundred twenty-one".