22236047 has 2 divisors, whose sum is σ = 22236048. Its totient is φ = 22236046.

The previous prime is 22236041. The next prime is 22236073. The reversal of 22236047 is 74063222.

It is an a-pointer prime, because the next prime (22236073) can be obtained adding 22236047 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22236047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22236041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11118023 + 11118024.

It is an arithmetic number, because the mean of its divisors is an integer number (11118024).

Almost surely, 2^22236047 is an apocalyptic number.

22236047 is a deficient number, since it is larger than the sum of its proper divisors (1).

22236047 is an equidigital number, since it uses as much as digits as its factorization.

22236047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 22236047 is about 4715.5113190406. The cubic root of 22236047 is about 281.2025110272.

Adding to 22236047 its reverse (74063222), we get a palindrome (96299269).

The spelling of 22236047 in words is "twenty-two million, two hundred thirty-six thousand, forty-seven".