129222737 has 8 divisors (see below), whose sum is σ = 147758400. Its totient is φ = 110705904.

The previous prime is 129222713. The next prime is 129222757. The reversal of 129222737 is 737222921.

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 129222737 - 2⁸ = 129222481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129222697 and 129222706.

It is not an unprimeable number, because it can be changed into a prime (129222757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16214 + ... + 22832.

It is an arithmetic number, because the mean of its divisors is an integer number (18469800).

Almost surely, 2^129222737 is an apocalyptic number.

It is an amenable number.

129222737 is a deficient number, since it is larger than the sum of its proper divisors (18535663).

129222737 is an equidigital number, since it uses as much as digits as its factorization.

129222737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9415.

The product of its digits is 21168, while the sum is 35.

The square root of 129222737 is about 11367.6179122981. The cubic root of 129222737 is about 505.5680788232.

The spelling of 129222737 in words is "one hundred twenty-nine million, two hundred twenty-two thousand, seven hundred thirty-seven".