2122636081 has 4 divisors (see below), whose sum is σ = 2122993152. Its totient is φ = 2122279012.

The previous prime is 2122636073. The next prime is 2122636141. The reversal of 2122636081 is 1806362212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2122636081 - 2³ = 2122636073 is a prime.

It is a super-2 number, since 2×2122636081² = 9011167864726077122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122636181) 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 3 ways as a sum of consecutive naturals, for example, 169465 + ... + 181558.

It is an arithmetic number, because the mean of its divisors is an integer number (530748288).

Almost surely, 2^2122636081 is an apocalyptic number.

It is an amenable number.

2122636081 is a deficient number, since it is larger than the sum of its proper divisors (357071).

2122636081 is an equidigital number, since it uses as much as digits as its factorization.

2122636081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357070.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2122636081 is about 46072.0748501736. The cubic root of 2122636081 is about 1285.1638889212.

Adding to 2122636081 its reverse (1806362212), we get a palindrome (3928998293).

The spelling of 2122636081 in words is "two billion, one hundred twenty-two million, six hundred thirty-six thousand, eighty-one".