868222811 has 2 divisors, whose sum is σ = 868222812. Its totient is φ = 868222810.

The previous prime is 868222787. The next prime is 868222891. The reversal of 868222811 is 118222868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 868222811 - 2¹⁰ = 868221787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (868222891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434111405 + 434111406.

It is an arithmetic number, because the mean of its divisors is an integer number (434111406).

Almost surely, 2^868222811 is an apocalyptic number.

868222811 is a deficient number, since it is larger than the sum of its proper divisors (1).

868222811 is an equidigital number, since it uses as much as digits as its factorization.

868222811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24576, while the sum is 38.

The square root of 868222811 is about 29465.6208317422. The cubic root of 868222811 is about 953.9897986272.

The spelling of 868222811 in words is "eight hundred sixty-eight million, two hundred twenty-two thousand, eight hundred eleven".