211013082515 has 4 divisors (see below), whose sum is σ = 253215699024. Its totient is φ = 168810466008.

The previous prime is 211013082503. The next prime is 211013082523. The reversal of 211013082515 is 515280310112.

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 211013082515 - 2²⁸ = 210744647059 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21101308247 + ... + 21101308256.

It is an arithmetic number, because the mean of its divisors is an integer number (63303924756).

Almost surely, 2^211013082515 is an apocalyptic number.

211013082515 is a deficient number, since it is larger than the sum of its proper divisors (42202616509).

211013082515 is an equidigital number, since it uses as much as digits as its factorization.

211013082515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42202616508.

The product of its (nonzero) digits is 2400, while the sum is 29.

Adding to 211013082515 its reverse (515280310112), we get a palindrome (726293392627).

The spelling of 211013082515 in words is "two hundred eleven billion, thirteen million, eighty-two thousand, five hundred fifteen".