129022229 has 16 divisors (see below), whose sum is σ = 150009600. Its totient is φ = 108691200.

The previous prime is 129022213. The next prime is 129022261. The reversal of 129022229 is 922220921.

It is a cyclic number.

It is not a de Polignac number, because 129022229 - 2⁴ = 129022213 is a prime.

It is a super-2 number, since 2×129022229² = 33293471152256882, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129022429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106829 + ... + 108029.

It is an arithmetic number, because the mean of its divisors is an integer number (9375600).

Almost surely, 2^129022229 is an apocalyptic number.

It is an amenable number.

129022229 is a deficient number, since it is larger than the sum of its proper divisors (20987371).

129022229 is a wasteful number, since it uses less digits than its factorization.

129022229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 129022229 is about 11358.7952266074. The cubic root of 129022229 is about 505.3064558242.

The spelling of 129022229 in words is "one hundred twenty-nine million, twenty-two thousand, two hundred twenty-nine".