4221366143 has 4 divisors (see below), whose sum is σ = 4231160928. Its totient is φ = 4211571360.

The previous prime is 4221366137. The next prime is 4221366181. The reversal of 4221366143 is 3416631224.

4221366143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4221366143 - 2²² = 4217171839 is a prime.

It is a super-2 number, since 2×4221366143² = 35639864226533392898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221366943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4896746 + ... + 4897607.

It is an arithmetic number, because the mean of its divisors is an integer number (1057790232).

Almost surely, 2^4221366143 is an apocalyptic number.

4221366143 is a deficient number, since it is larger than the sum of its proper divisors (9794785).

4221366143 is an equidigital number, since it uses as much as digits as its factorization.

4221366143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9794784.

The product of its digits is 20736, while the sum is 32.

The square root of 4221366143 is about 64972.0412408291. The cubic root of 4221366143 is about 1616.1599520167.

Adding to 4221366143 its reverse (3416631224), we get a palindrome (7637997367).

The spelling of 4221366143 in words is "four billion, two hundred twenty-one million, three hundred sixty-six thousand, one hundred forty-three".