22000129 has 2 divisors, whose sum is σ = 22000130. Its totient is φ = 22000128.

The previous prime is 22000127. The next prime is 22000151. The reversal of 22000129 is 92100022.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14288400 + 7711729 = 3780^2 + 2777^2 .

It is a cyclic number.

It is not a de Polignac number, because 22000129 - 2¹ = 22000127 is a prime.

Together with 22000127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22000127) 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, 11000064 + 11000065.

It is an arithmetic number, because the mean of its divisors is an integer number (11000065).

Almost surely, 2^22000129 is an apocalyptic number.

It is an amenable number.

22000129 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000129 is an equidigital number, since it uses as much as digits as its factorization.

22000129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 22000129 is about 4690.4295112495. The cubic root of 22000129 is about 280.2044807358.

The spelling of 22000129 in words is "twenty-two million, one hundred twenty-nine", and thus it is an aban number.