129222911 has 8 divisors (see below), whose sum is σ = 135272448. Its totient is φ = 123291000.

The previous prime is 129222893. The next prime is 129222913. The reversal of 129222911 is 119222921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 129222911 - 2¹⁰ = 129221887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129222913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27155 + ... + 31556.

It is an arithmetic number, because the mean of its divisors is an integer number (16909056).

Almost surely, 2^129222911 is an apocalyptic number.

129222911 is a deficient number, since it is larger than the sum of its proper divisors (6049537).

129222911 is an equidigital number, since it uses as much as digits as its factorization.

129222911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58813.

The product of its digits is 1296, while the sum is 29.

The square root of 129222911 is about 11367.6255656140. The cubic root of 129222911 is about 505.5683057410.

The spelling of 129222911 in words is "one hundred twenty-nine million, two hundred twenty-two thousand, nine hundred eleven".