2120312129 has 8 divisors (see below), whose sum is σ = 2289380352. Its totient is φ = 1952096400.

The previous prime is 2120312123. The next prime is 2120312141. The reversal of 2120312129 is 9212130212.

It is a happy number.

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 2120312129 - 2¹² = 2120308033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120312123) 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, 207947 + ... + 217904.

It is an arithmetic number, because the mean of its divisors is an integer number (286172544).

Almost surely, 2^2120312129 is an apocalyptic number.

It is an amenable number.

2120312129 is a deficient number, since it is larger than the sum of its proper divisors (169068223).

2120312129 is a wasteful number, since it uses less digits than its factorization.

2120312129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426247.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2120312129 is about 46046.8471124788. The cubic root of 2120312129 is about 1284.6947003411.

The spelling of 2120312129 in words is "two billion, one hundred twenty million, three hundred twelve thousand, one hundred twenty-nine".