22047811 has 2 divisors, whose sum is σ = 22047812. Its totient is φ = 22047810.

The previous prime is 22047803. The next prime is 22047853. The reversal of 22047811 is 11874022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22047811 - 2³ = 22047803 is a prime.

It is a super-2 number, since 2×22047811² = 972211939783442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22047611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11023905 + 11023906.

It is an arithmetic number, because the mean of its divisors is an integer number (11023906).

Almost surely, 2^22047811 is an apocalyptic number.

22047811 is a deficient number, since it is larger than the sum of its proper divisors (1).

22047811 is an equidigital number, since it uses as much as digits as its factorization.

22047811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 22047811 is about 4695.5096634977. The cubic root of 22047811 is about 280.4067684770.

The spelling of 22047811 in words is "twenty-two million, forty-seven thousand, eight hundred eleven".