8212033561 has 8 divisors (see below), whose sum is σ = 8572244744. Its totient is φ = 7859099520.

The previous prime is 8212033523. The next prime is 8212033607. The reversal of 8212033561 is 1653302128.

It can be written as a sum of positive squares in 4 ways, for example, as 230400 + 8211803161 = 480^2 + 90619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8212033561 - 2²⁵ = 8178479129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8212133561) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1816980 + ... + 1821493.

It is an arithmetic number, because the mean of its divisors is an integer number (1071530593).

Almost surely, 2^8212033561 is an apocalyptic number.

It is an amenable number.

8212033561 is a deficient number, since it is larger than the sum of its proper divisors (360211183).

8212033561 is a wasteful number, since it uses less digits than its factorization.

8212033561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638571.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 8212033561 is about 90620.2712476629. The cubic root of 8212033561 is about 2017.5156171827.

Adding to 8212033561 its reverse (1653302128), we get a palindrome (9865335689).

The spelling of 8212033561 in words is "eight billion, two hundred twelve million, thirty-three thousand, five hundred sixty-one".