2128229125 has 16 divisors (see below), whose sum is σ = 2897489088. Its totient is φ = 1547802000.

The previous prime is 2128229053. The next prime is 2128229149. The reversal of 2128229125 is 5219228212.

It is a happy number.

It is not a de Polignac number, because 2128229125 - 2¹¹ = 2128227077 is a prime.

It is a super-3 number, since 3×2128229125³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 772527 + ... + 775276.

It is an arithmetic number, because the mean of its divisors is an integer number (181093068).

Almost surely, 2^2128229125 is an apocalyptic number.

2128229125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2128229125 is a deficient number, since it is larger than the sum of its proper divisors (769259963).

2128229125 is a wasteful number, since it uses less digits than its factorization.

2128229125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547829 (or 1547819 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 2128229125 is about 46132.7337689845. The cubic root of 2128229125 is about 1286.2916806236.

The spelling of 2128229125 in words is "two billion, one hundred twenty-eight million, two hundred twenty-nine thousand, one hundred twenty-five".