4221811 has 24 divisors (see below), whose sum is σ = 5094432. Its totient is φ = 3484800.

The previous prime is 4221799. The next prime is 4221827. The reversal of 4221811 is 1181224.

It is a happy number.

It is not a de Polignac number, because 4221811 - 2⁵ = 4221779 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 (4221851) 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 23 ways as a sum of consecutive naturals, for example, 102951 + ... + 102991.

It is an arithmetic number, because the mean of its divisors is an integer number (212268).

Almost surely, 2^4221811 is an apocalyptic number.

4221811 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4221811 is a deficient number, since it is larger than the sum of its proper divisors (872621).

4221811 is a wasteful number, since it uses less digits than its factorization.

4221811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 112 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

The square root of 4221811 is about 2054.7046016399. The cubic root of 4221811 is about 161.6216721539.

The spelling of 4221811 in words is "four million, two hundred twenty-one thousand, eight hundred eleven".