22100047 has 2 divisors, whose sum is σ = 22100048. Its totient is φ = 22100046.

The previous prime is 22100041. The next prime is 22100069. The reversal of 22100047 is 74000122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22100047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22100047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22100041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050023 + 11050024.

It is an arithmetic number, because the mean of its divisors is an integer number (11050024).

Almost surely, 2^22100047 is an apocalyptic number.

22100047 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100047 is an equidigital number, since it uses as much as digits as its factorization.

22100047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 22100047 is about 4701.0687082833. The cubic root of 22100047 is about 280.6280417757.

Adding to 22100047 its reverse (74000122), we get a palindrome (96100169).

The spelling of 22100047 in words is "twenty-two million, one hundred thousand, forty-seven".