4221002215 has 4 divisors (see below), whose sum is σ = 5065202664. Its totient is φ = 3376801768.

The previous prime is 4221002167. The next prime is 4221002231. The reversal of 4221002215 is 5122001224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4221002215 - 2⁷ = 4221002087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4221002192 and 4221002201.

It is a congruent number.

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, 422100217 + ... + 422100226.

It is an arithmetic number, because the mean of its divisors is an integer number (1266300666).

Almost surely, 2^4221002215 is an apocalyptic number.

4221002215 is a deficient number, since it is larger than the sum of its proper divisors (844200449).

4221002215 is an equidigital number, since it uses as much as digits as its factorization.

4221002215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844200448.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 4221002215 is about 64969.2405296537. The cubic root of 4221002215 is about 1616.1135071186.

Adding to 4221002215 its reverse (5122001224), we get a palindrome (9343003439).

Subtracting 4221002215 from its reverse (5122001224), we obtain a palindrome (900999009).

The spelling of 4221002215 in words is "four billion, two hundred twenty-one million, two thousand, two hundred fifteen".