2189219021 has 8 divisors (see below), whose sum is σ = 2388813024. Its totient is φ = 1989720720.

The previous prime is 2189219009. The next prime is 2189219027. The reversal of 2189219021 is 1209129812.

2189219021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2189219021 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 (2189219027) 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, 29015 + ... + 72251.

It is an arithmetic number, because the mean of its divisors is an integer number (298601628).

Almost surely, 2^2189219021 is an apocalyptic number.

It is an amenable number.

2189219021 is a deficient number, since it is larger than the sum of its proper divisors (199594003).

2189219021 is a wasteful number, since it uses less digits than its factorization.

2189219021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47851.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 2189219021 is about 46789.0908332274. The cubic root of 2189219021 is about 1298.4634747691.

The spelling of 2189219021 in words is "two billion, one hundred eighty-nine million, two hundred nineteen thousand, twenty-one".