1002220015 has 4 divisors (see below), whose sum is σ = 1202664024. Its totient is φ = 801776008.

The previous prime is 1002220001. The next prime is 1002220033. The reversal of 1002220015 is 5100222001.

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 1002220015 - 2²¹ = 1000122863 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002219977 and 1002220004.

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, 100221997 + ... + 100222006.

It is an arithmetic number, because the mean of its divisors is an integer number (300666006).

Almost surely, 2^1002220015 is an apocalyptic number.

1002220015 is a deficient number, since it is larger than the sum of its proper divisors (200444009).

1002220015 is an equidigital number, since it uses as much as digits as its factorization.

1002220015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200444008.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1002220015 is about 31657.8586610023. The cubic root of 1002220015 is about 1000.7394580670.

Adding to 1002220015 its reverse (5100222001), we get a palindrome (6102442016).

The spelling of 1002220015 in words is "one billion, two million, two hundred twenty thousand, fifteen".