4214505821 has 4 divisors (see below), whose sum is σ = 4214649792. Its totient is φ = 4214361852.

The previous prime is 4214505817. The next prime is 4214505829. The reversal of 4214505821 is 1285054124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4214505821 - 2² = 4214505817 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 (4214505829) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10661 + ... + 92426.

It is an arithmetic number, because the mean of its divisors is an integer number (1053662448).

Almost surely, 2^4214505821 is an apocalyptic number.

It is an amenable number.

4214505821 is a deficient number, since it is larger than the sum of its proper divisors (143971).

4214505821 is a wasteful number, since it uses less digits than its factorization.

4214505821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143970.

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 4214505821 is about 64919.2253573624. The cubic root of 4214505821 is about 1615.2839805171.

Adding to 4214505821 its reverse (1285054124), we get a palindrome (5499559945).

The spelling of 4214505821 in words is "four billion, two hundred fourteen million, five hundred five thousand, eight hundred twenty-one".