94221811 has 2 divisors, whose sum is σ = 94221812. Its totient is φ = 94221810.

The previous prime is 94221791. The next prime is 94221847. The reversal of 94221811 is 11812249.

It is a weak prime.

It is an emirp because it is prime and its reverse (11812249) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94221811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 94221811.

It is not a weakly prime, because it can be changed into another prime (94221851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47110905 + 47110906.

It is an arithmetic number, because the mean of its divisors is an integer number (47110906).

Almost surely, 2^94221811 is an apocalyptic number.

94221811 is a deficient number, since it is larger than the sum of its proper divisors (1).

94221811 is an equidigital number, since it uses as much as digits as its factorization.

94221811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 28.

The square root of 94221811 is about 9706.7920035406. The cubic root of 94221811 is about 455.0409511103.

The spelling of 94221811 in words is "ninety-four million, two hundred twenty-one thousand, eight hundred eleven".