4221421612 has 12 divisors (see below), whose sum is σ = 7587149920. Its totient is φ = 2053664496.

The previous prime is 4221421601. The next prime is 4221421639. The reversal of 4221421612 is 2161241224.

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, 14261412 + ... + 14261707.

Almost surely, 2^4221421612 is an apocalyptic number.

It is an amenable number.

4221421612 is a deficient number, since it is larger than the sum of its proper divisors (3365728308).

4221421612 is a wasteful number, since it uses less digits than its factorization.

4221421612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28523160 (or 28523158 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 4221421612 is about 64972.4681076531. The cubic root of 4221421612 is about 1616.1670307981.

Adding to 4221421612 its reverse (2161241224), we get a palindrome (6382662836).

The spelling of 4221421612 in words is "four billion, two hundred twenty-one million, four hundred twenty-one thousand, six hundred twelve".