4220188821 has 24 divisors (see below), whose sum is σ = 6186211200. Its totient is φ = 2772022176.

The previous prime is 4220188811. The next prime is 4220188823. The reversal of 4220188821 is 1288810224.

It is not a de Polignac number, because 4220188821 - 2¹⁵ = 4220156053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220188823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173035 + ... + 195911.

It is an arithmetic number, because the mean of its divisors is an integer number (257758800).

Almost surely, 2^4220188821 is an apocalyptic number.

It is an amenable number.

4220188821 is a deficient number, since it is larger than the sum of its proper divisors (1966022379).

4220188821 is a wasteful number, since it uses less digits than its factorization.

4220188821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23185 (or 23182 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 4220188821 is about 64962.9803888338. The cubic root of 4220188821 is about 1616.0096912150.

The spelling of 4220188821 in words is "four billion, two hundred twenty million, one hundred eighty-eight thousand, eight hundred twenty-one".