22222681 has 16 divisors (see below), whose sum is σ = 25127424. Its totient is φ = 19514304.

The previous prime is 22222679. The next prime is 22222699. The reversal of 22222681 is 18622222.

It is a cyclic number.

It is not a de Polignac number, because 22222681 - 2¹ = 22222679 is a prime.

It is a super-2 number, since 2×22222681² = 987695101655522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22222601) 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 15 ways as a sum of consecutive naturals, for example, 22116 + ... + 23098.

It is an arithmetic number, because the mean of its divisors is an integer number (1570464).

Almost surely, 2^22222681 is an apocalyptic number.

It is an amenable number.

22222681 is a deficient number, since it is larger than the sum of its proper divisors (2904743).

22222681 is a wasteful number, since it uses less digits than its factorization.

22222681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its digits is 1536, while the sum is 25.

The square root of 22222681 is about 4714.0938683908. The cubic root of 22222681 is about 281.1461564948.

The spelling of 22222681 in words is "twenty-two million, two hundred twenty-two thousand, six hundred eighty-one".