4421213231 has 4 divisors (see below), whose sum is σ = 4421586312. Its totient is φ = 4420840152.

The previous prime is 4421213197. The next prime is 4421213233. The reversal of 4421213231 is 1323121244.

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 4421213231 - 2²² = 4417018927 is a prime.

It is a super-2 number, since 2×4421213231² = 39094252867938918722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4421213197 and 4421213206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421213233) 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, 168161 + ... + 192666.

It is an arithmetic number, because the mean of its divisors is an integer number (1105396578).

Almost surely, 2^4421213231 is an apocalyptic number.

4421213231 is a deficient number, since it is larger than the sum of its proper divisors (373081).

4421213231 is a wasteful number, since it uses less digits than its factorization.

4421213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373080.

The product of its digits is 1152, while the sum is 23.

The square root of 4421213231 is about 66492.2042874200. The cubic root of 4421213231 is about 1641.2717221816.

Adding to 4421213231 its reverse (1323121244), we get a palindrome (5744334475).

The spelling of 4421213231 in words is "four billion, four hundred twenty-one million, two hundred thirteen thousand, two hundred thirty-one".