4221534015 has 48 divisors (see below), whose sum is σ = 7376896800. Its totient is φ = 2233241856.

The previous prime is 4221534013. The next prime is 4221534017. The reversal of 4221534015 is 5104351224.

4221534015 is a `hidden beast` number, since 42 + 215 + 3 + 401 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (4221534013) and next prime (4221534017).

It is not a de Polignac number, because 4221534015 - 2¹ = 4221534013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4221534015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221534013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3352456 + ... + 3353714.

It is an arithmetic number, because the mean of its divisors is an integer number (153685350).

Almost surely, 2^4221534015 is an apocalyptic number.

4221534015 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4221534015 is a deficient number, since it is larger than the sum of its proper divisors (3155362785).

4221534015 is a wasteful number, since it uses less digits than its factorization.

4221534015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 4221534015 is about 64973.3331067446. Note that the first 3 decimals coincide. The cubic root of 4221534015 is about 1616.1813751294.

Adding to 4221534015 its reverse (5104351224), we get a palindrome (9325885239).

The spelling of 4221534015 in words is "four billion, two hundred twenty-one million, five hundred thirty-four thousand, fifteen".