2197172129 has 8 divisors (see below), whose sum is σ = 2304709632. Its totient is φ = 2090635360.

The previous prime is 2197172051. The next prime is 2197172149. The reversal of 2197172129 is 9212717912.

2197172129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2197172129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2197172149) 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, 245684 + ... + 254469.

It is an arithmetic number, because the mean of its divisors is an integer number (288088704).

Almost surely, 2^2197172129 is an apocalyptic number.

It is an amenable number.

2197172129 is a deficient number, since it is larger than the sum of its proper divisors (107537503).

2197172129 is a wasteful number, since it uses less digits than its factorization.

2197172129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500367.

The product of its digits is 31752, while the sum is 41.

The square root of 2197172129 is about 46874.0026987242. The cubic root of 2197172129 is about 1300.0339496065.

The spelling of 2197172129 in words is "two billion, one hundred ninety-seven million, one hundred seventy-two thousand, one hundred twenty-nine".