11622081 has 4 divisors (see below), whose sum is σ = 15496112. Its totient is φ = 7748052.

The previous prime is 11622073. The next prime is 11622103. The reversal of 11622081 is 18022611.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18022611 = 3 ⋅6007537.

It is not a de Polignac number, because 11622081 - 2³ = 11622073 is a prime.

It is a super-2 number, since 2×11622081² = 270145533541122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11622001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1937011 + ... + 1937016.

It is an arithmetic number, because the mean of its divisors is an integer number (3874028).

Almost surely, 2^11622081 is an apocalyptic number.

It is an amenable number.

11622081 is a deficient number, since it is larger than the sum of its proper divisors (3874031).

11622081 is an equidigital number, since it uses as much as digits as its factorization.

11622081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874030.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 11622081 is about 3409.1173344430. The cubic root of 11622081 is about 226.5137826698.

Adding to 11622081 its reverse (18022611), we get a palindrome (29644692).

The spelling of 11622081 in words is "eleven million, six hundred twenty-two thousand, eighty-one".