4221242522 has 8 divisors (see below), whose sum is σ = 7236415776. Its totient is φ = 1809103932.

The previous prime is 4221242513. The next prime is 4221242527. The reversal of 4221242522 is 2252421224.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 4221242491 and 4221242500.

It is not an unprimeable number, because it can be changed into a prime (4221242527) 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, 150758648 + ... + 150758675.

It is an arithmetic number, because the mean of its divisors is an integer number (904551972).

Almost surely, 2^4221242522 is an apocalyptic number.

4221242522 is a deficient number, since it is larger than the sum of its proper divisors (3015173254).

4221242522 is a wasteful number, since it uses less digits than its factorization.

4221242522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301517332.

The product of its digits is 5120, while the sum is 26.

The square root of 4221242522 is about 64971.0898938905. The cubic root of 4221242522 is about 1616.1441756659.

Adding to 4221242522 its reverse (2252421224), we get a palindrome (6473663746).

The spelling of 4221242522 in words is "four billion, two hundred twenty-one million, two hundred forty-two thousand, five hundred twenty-two".