22236081 has 8 divisors (see below), whose sum is σ = 33883584. Its totient is φ = 12706320.

The previous prime is 22236079. The next prime is 22236089. The reversal of 22236081 is 18063222.

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

It is not a de Polignac number, because 22236081 - 2¹ = 22236079 is a prime.

It is a super-2 number, since 2×22236081² = 988886596477122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22236089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529410 + ... + 529451.

It is an arithmetic number, because the mean of its divisors is an integer number (4235448).

Almost surely, 2^22236081 is an apocalyptic number.

22236081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22236081 is a deficient number, since it is larger than the sum of its proper divisors (11647503).

22236081 is a wasteful number, since it uses less digits than its factorization.

22236081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058871.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 22236081 is about 4715.5149241626. The cubic root of 22236081 is about 281.2026543513.

The spelling of 22236081 in words is "twenty-two million, two hundred thirty-six thousand, eighty-one".