2211252515 has 4 divisors (see below), whose sum is σ = 2653503024. Its totient is φ = 1769002008.

The previous prime is 2211252503. The next prime is 2211252557. The reversal of 2211252515 is 5152521122.

It is a happy number.

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 2211252515 - 2¹² = 2211248419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221125247 + ... + 221125256.

It is an arithmetic number, because the mean of its divisors is an integer number (663375756).

Almost surely, 2^2211252515 is an apocalyptic number.

2211252515 is a deficient number, since it is larger than the sum of its proper divisors (442250509).

2211252515 is an equidigital number, since it uses as much as digits as its factorization.

2211252515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442250508.

The product of its digits is 2000, while the sum is 26.

The square root of 2211252515 is about 47023.9568199019. The cubic root of 2211252515 is about 1302.8050898746.

Adding to 2211252515 its reverse (5152521122), we get a palindrome (7363773637).

The spelling of 2211252515 in words is "two billion, two hundred eleven million, two hundred fifty-two thousand, five hundred fifteen".