22001047 has 2 divisors, whose sum is σ = 22001048. Its totient is φ = 22001046.

The previous prime is 22001033. The next prime is 22001071. The reversal of 22001047 is 74010022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22001047 - 2⁷ = 22000919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22001047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000523 + 11000524.

It is an arithmetic number, because the mean of its divisors is an integer number (11000524).

Almost surely, 2^22001047 is an apocalyptic number.

22001047 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001047 is an equidigital number, since it uses as much as digits as its factorization.

22001047 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 22001047 is about 4690.5273690706. The cubic root of 22001047 is about 280.2083780483.

Adding to 22001047 its reverse (74010022), we get a palindrome (96011069).

The spelling of 22001047 in words is "twenty-two million, one thousand, forty-seven".