22127947 has 2 divisors, whose sum is σ = 22127948. Its totient is φ = 22127946.

The previous prime is 22127927. The next prime is 22128011. The reversal of 22127947 is 74972122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22127947 is a prime.

It is not a weakly prime, because it can be changed into another prime (22127927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11063973 + 11063974.

It is an arithmetic number, because the mean of its divisors is an integer number (11063974).

Almost surely, 2^22127947 is an apocalyptic number.

22127947 is a deficient number, since it is larger than the sum of its proper divisors (1).

22127947 is an equidigital number, since it uses as much as digits as its factorization.

22127947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 34.

The square root of 22127947 is about 4704.0351826916. The cubic root of 22127947 is about 280.7460842080.

The spelling of 22127947 in words is "twenty-two million, one hundred twenty-seven thousand, nine hundred forty-seven".