22011047 has 2 divisors, whose sum is σ = 22011048. Its totient is φ = 22011046.

The previous prime is 22011043. The next prime is 22011049. The reversal of 22011047 is 74011022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22011047 - 2² = 22011043 is a prime.

Together with 22011049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22011043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005523 + 11005524.

It is an arithmetic number, because the mean of its divisors is an integer number (11005524).

Almost surely, 2^22011047 is an apocalyptic number.

22011047 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011047 is an equidigital number, since it uses as much as digits as its factorization.

22011047 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 17.

The square root of 22011047 is about 4691.5932261866. The cubic root of 22011047 is about 280.2508254123.

Adding to 22011047 its reverse (74011022), we get a palindrome (96022069).

The spelling of 22011047 in words is "twenty-two million, eleven thousand, forty-seven".