22209827 has 2 divisors, whose sum is σ = 22209828. Its totient is φ = 22209826.

The previous prime is 22209821. The next prime is 22209829. The reversal of 22209827 is 72890222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22209827 - 2¹² = 22205731 is a prime.

Together with 22209829, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22209793 and 22209802.

It is not a weakly prime, because it can be changed into another prime (22209821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11104913 + 11104914.

It is an arithmetic number, because the mean of its divisors is an integer number (11104914).

Almost surely, 2^22209827 is an apocalyptic number.

22209827 is a deficient number, since it is larger than the sum of its proper divisors (1).

22209827 is an equidigital number, since it uses as much as digits as its factorization.

22209827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 22209827 is about 4712.7303126744. The cubic root of 22209827 is about 281.0919393687.

The spelling of 22209827 in words is "twenty-two million, two hundred nine thousand, eight hundred twenty-seven".