22003129 has 2 divisors, whose sum is σ = 22003130. Its totient is φ = 22003128.

The previous prime is 22003103. The next prime is 22003181. The reversal of 22003129 is 92130022.

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., 12250000 + 9753129 = 3500^2 + 3123^2 .

It is a cyclic number.

It is not a de Polignac number, because 22003129 - 2¹⁹ = 21478841 is a prime.

It is not a weakly prime, because it can be changed into another prime (22003529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11001564 + 11001565.

It is an arithmetic number, because the mean of its divisors is an integer number (11001565).

Almost surely, 2^22003129 is an apocalyptic number.

It is an amenable number.

22003129 is a deficient number, since it is larger than the sum of its proper divisors (1).

22003129 is an equidigital number, since it uses as much as digits as its factorization.

22003129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 22003129 is about 4690.7493004849. The cubic root of 22003129 is about 280.2172166495.

It can be divided in two parts, 2200 and 3129, that added together give a square (5329 = 73²).

The spelling of 22003129 in words is "twenty-two million, three thousand, one hundred twenty-nine".