4222530621 has 32 divisors (see below), whose sum is σ = 6347617920. Its totient is φ = 2773896192.

The previous prime is 4222530589. The next prime is 4222530623. The reversal of 4222530621 is 1260352224.

It is a happy number.

4222530621 is a `hidden beast` number, since 4 + 2 + 2 + 2 + 5 + 30 + 621 = 666.

It is not a de Polignac number, because 4222530621 - 2⁵ = 4222530589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4222530623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 553791 + ... + 561363.

It is an arithmetic number, because the mean of its divisors is an integer number (198363060).

Almost surely, 2^4222530621 is an apocalyptic number.

It is an amenable number.

4222530621 is a deficient number, since it is larger than the sum of its proper divisors (2125087299).

4222530621 is a wasteful number, since it uses less digits than its factorization.

4222530621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7882 (or 7876 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 4222530621 is about 64981.0020005848. The cubic root of 4222530621 is about 1616.3085460675.

Adding to 4222530621 its reverse (1260352224), we get a palindrome (5482882845).

The spelling of 4222530621 in words is "four billion, two hundred twenty-two million, five hundred thirty thousand, six hundred twenty-one".