4221611505 has 12 divisors (see below), whose sum is σ = 7317460020. Its totient is φ = 2251526112.

The previous prime is 4221611503. The next prime is 4221611531. The reversal of 4221611505 is 5051161224.

4221611505 is a `hidden beast` number, since 42 + 2 + 1 + 611 + 5 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 674337024 + 3547274481 = 25968^2 + 59559^2 .

It is not a de Polignac number, because 4221611505 - 2¹ = 4221611503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4221611503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46906750 + ... + 46906839.

It is an arithmetic number, because the mean of its divisors is an integer number (609788335).

Almost surely, 2^4221611505 is an apocalyptic number.

4221611505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4221611505 is a deficient number, since it is larger than the sum of its proper divisors (3095848515).

4221611505 is a wasteful number, since it uses less digits than its factorization.

4221611505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93813600 (or 93813597 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 4221611505 is about 64973.9294255781. The cubic root of 4221611505 is about 1616.1912638829.

Adding to 4221611505 its reverse (5051161224), we get a palindrome (9272772729).

The spelling of 4221611505 in words is "four billion, two hundred twenty-one million, six hundred eleven thousand, five hundred five".