2122012129 has 4 divisors (see below), whose sum is σ = 2122254640. Its totient is φ = 2121769620.

The previous prime is 2122012111. The next prime is 2122012133. The reversal of 2122012129 is 9212102212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2122012129 - 2¹¹ = 2122010081 is a prime.

It is a super-2 number, since 2×2122012129² = 9005870951246225282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122012159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107619 + ... + 125800.

It is an arithmetic number, because the mean of its divisors is an integer number (530563660).

Almost surely, 2^2122012129 is an apocalyptic number.

It is an amenable number.

2122012129 is a deficient number, since it is larger than the sum of its proper divisors (242511).

2122012129 is an equidigital number, since it uses as much as digits as its factorization.

2122012129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242510.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2122012129 is about 46065.3028753747. The cubic root of 2122012129 is about 1285.0379513084.

The spelling of 2122012129 in words is "two billion, one hundred twenty-two million, twelve thousand, one hundred twenty-nine".