2129229 has 12 divisors (see below), whose sum is σ = 3088800. Its totient is φ = 1413384.

The previous prime is 2129227. The next prime is 2129261. The reversal of 2129229 is 9229212.

2129229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2129229 - 2¹ = 2129227 is a prime.

It is a super-2 number, since 2×2129229² = 9067232268882, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2902 + ... + 3560.

It is an arithmetic number, because the mean of its divisors is an integer number (257400).

2^2129229 is an apocalyptic number.

It is an amenable number.

2129229 is a deficient number, since it is larger than the sum of its proper divisors (959571).

2129229 is a wasteful number, since it uses less digits than its factorization.

2129229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1021 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2129229 is about 1459.1877877778. The cubic root of 2129229 is about 128.6493089002.

It can be divided in two parts, 21292 and 29, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 2129229 in words is "two million, one hundred twenty-nine thousand, two hundred twenty-nine".