86327444221 has 2 divisors, whose sum is σ = 86327444222. Its totient is φ = 86327444220.

The previous prime is 86327444219. The next prime is 86327444227. The reversal of 86327444221 is 12244472368.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85854860100 + 472584121 = 293010^2 + 21739^2 .

It is a cyclic number.

It is not a de Polignac number, because 86327444221 - 2¹ = 86327444219 is a prime.

Together with 86327444219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86327444227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43163722110 + 43163722111.

It is an arithmetic number, because the mean of its divisors is an integer number (43163722111).

Almost surely, 2^86327444221 is an apocalyptic number.

It is an amenable number.

86327444221 is a deficient number, since it is larger than the sum of its proper divisors (1).

86327444221 is an equidigital number, since it uses as much as digits as its factorization.

86327444221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 43.

The spelling of 86327444221 in words is "eighty-six billion, three hundred twenty-seven million, four hundred forty-four thousand, two hundred twenty-one".