4221213124 has 12 divisors (see below), whose sum is σ = 7388293500. Its totient is φ = 2110272128.

The previous prime is 4221213107. The next prime is 4221213137. The reversal of 4221213124 is 4213121224.

It can be written as a sum of positive squares in 2 ways, for example, as 3773890624 + 447322500 = 61432^2 + 21150^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4221213095 and 4221213104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54049 + ... + 106600.

It is an arithmetic number, because the mean of its divisors is an integer number (615691125).

Almost surely, 2^4221213124 is an apocalyptic number.

It is an amenable number.

4221213124 is a deficient number, since it is larger than the sum of its proper divisors (3167080376).

4221213124 is a wasteful number, since it uses less digits than its factorization.

4221213124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167222 (or 167220 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 4221213124 is about 64970.8636544105. The cubic root of 4221213124 is about 1616.1404238862.

Adding to 4221213124 its reverse (4213121224), we get a palindrome (8434334348).

The spelling of 4221213124 in words is "four billion, two hundred twenty-one million, two hundred thirteen thousand, one hundred twenty-four".