22122681 has 8 divisors (see below), whose sum is σ = 33710784. Its totient is φ = 12641520.

The previous prime is 22122671. The next prime is 22122689. The reversal of 22122681 is 18622122.

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

It is not a de Polignac number, because 22122681 - 2⁷ = 22122553 is a prime.

It is a super-2 number, since 2×22122681² = 978826029255522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22122689) 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 7 ways as a sum of consecutive naturals, for example, 526710 + ... + 526751.

It is an arithmetic number, because the mean of its divisors is an integer number (4213848).

Almost surely, 2^22122681 is an apocalyptic number.

22122681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22122681 is a deficient number, since it is larger than the sum of its proper divisors (11588103).

22122681 is a wasteful number, since it uses less digits than its factorization.

22122681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053471.

The product of its digits is 768, while the sum is 24.

The square root of 22122681 is about 4703.4754171782. The cubic root of 22122681 is about 280.7238118274.

The spelling of 22122681 in words is "twenty-two million, one hundred twenty-two thousand, six hundred eighty-one".