10212181815 has 32 divisors (see below), whose sum is σ = 18599901696. Its totient is φ = 4736082560.

The previous prime is 10212181711. The next prime is 10212181849. The reversal of 10212181815 is 51818121201.

It is not a de Polignac number, because 10212181815 - 2¹⁰ = 10212180791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1341684 + ... + 1349273.

It is an arithmetic number, because the mean of its divisors is an integer number (581246928).

Almost surely, 2^10212181815 is an apocalyptic number.

10212181815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10212181815 is a deficient number, since it is larger than the sum of its proper divisors (8387719881).

10212181815 is a wasteful number, since it uses less digits than its factorization.

10212181815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690999.

The product of its (nonzero) digits is 1280, while the sum is 30.

The spelling of 10212181815 in words is "ten billion, two hundred twelve million, one hundred eighty-one thousand, eight hundred fifteen".