2129484221 has 8 divisors (see below), whose sum is σ = 2164586040. Its totient is φ = 2094630912.

The previous prime is 2129484179. The next prime is 2129484257. The reversal of 2129484221 is 1224849212.

It can be written as a sum of positive squares in 4 ways, for example, as 76125625 + 2053358596 = 8725^2 + 45314^2 .

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 2129484221 - 2³⁰ = 1055742397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129484121) 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, 44810 + ... + 79163.

It is an arithmetic number, because the mean of its divisors is an integer number (270573255).

Almost surely, 2^2129484221 is an apocalyptic number.

It is an amenable number.

2129484221 is a deficient number, since it is larger than the sum of its proper divisors (35101819).

2129484221 is a wasteful number, since it uses less digits than its factorization.

2129484221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124255.

The product of its digits is 18432, while the sum is 35.

The square root of 2129484221 is about 46146.3348598781. The cubic root of 2129484221 is about 1286.5444889745.

The spelling of 2129484221 in words is "two billion, one hundred twenty-nine million, four hundred eighty-four thousand, two hundred twenty-one".