22226129 has 2 divisors, whose sum is σ = 22226130. Its totient is φ = 22226128.

The previous prime is 22226117. The next prime is 22226137. The reversal of 22226129 is 92162222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15840400 + 6385729 = 3980^2 + 2527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22226129 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22226098 and 22226107.

It is not a weakly prime, because it can be changed into another prime (22226329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11113064 + 11113065.

It is an arithmetic number, because the mean of its divisors is an integer number (11113065).

Almost surely, 2^22226129 is an apocalyptic number.

It is an amenable number.

22226129 is a deficient number, since it is larger than the sum of its proper divisors (1).

22226129 is an equidigital number, since it uses as much as digits as its factorization.

22226129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 26.

The square root of 22226129 is about 4714.4595660584. The cubic root of 22226129 is about 281.1606963218.

The spelling of 22226129 in words is "twenty-two million, two hundred twenty-six thousand, one hundred twenty-nine".