86203077221 has 2 divisors, whose sum is σ = 86203077222. Its totient is φ = 86203077220.

The previous prime is 86203077211. The next prime is 86203077227. The reversal of 86203077221 is 12277030268.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82377036196 + 3826041025 = 287014^2 + 61855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86203077221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86203077227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43101538610 + 43101538611.

It is an arithmetic number, because the mean of its divisors is an integer number (43101538611).

Almost surely, 2^86203077221 is an apocalyptic number.

It is an amenable number.

86203077221 is a deficient number, since it is larger than the sum of its proper divisors (1).

86203077221 is an equidigital number, since it uses as much as digits as its factorization.

86203077221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 86203077221 in words is "eighty-six billion, two hundred three million, seventy-seven thousand, two hundred twenty-one".