215135332441 has 2 divisors, whose sum is σ = 215135332442. Its totient is φ = 215135332440.

The previous prime is 215135332439. The next prime is 215135332487. The reversal of 215135332441 is 144233531512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210832497225 + 4302835216 = 459165^2 + 65596^2 .

It is a cyclic number.

It is not a de Polignac number, because 215135332441 - 2¹ = 215135332439 is a prime.

It is a super-2 number, since 2×215135332441² (a number of 23 digits) contains 22 as substring.

Together with 215135332439, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 215135332397 and 215135332406.

It is not a weakly prime, because it can be changed into another prime (215135332421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107567666220 + 107567666221.

It is an arithmetic number, because the mean of its divisors is an integer number (107567666221).

Almost surely, 2^215135332441 is an apocalyptic number.

It is an amenable number.

215135332441 is a deficient number, since it is larger than the sum of its proper divisors (1).

215135332441 is an equidigital number, since it uses as much as digits as its factorization.

215135332441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 34.

Adding to 215135332441 its reverse (144233531512), we get a palindrome (359368863953).

The spelling of 215135332441 in words is "two hundred fifteen billion, one hundred thirty-five million, three hundred thirty-two thousand, four hundred forty-one".