22214681 has 2 divisors, whose sum is σ = 22214682. Its totient is φ = 22214680.

The previous prime is 22214677. The next prime is 22214719. The reversal of 22214681 is 18641222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22174681 + 40000 = 4709^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 22214681 - 2² = 22214677 is a prime.

It is a super-2 number, since 2×22214681² = 986984103863522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22214681.

It is not a weakly prime, because it can be changed into another prime (22214611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11107340 + 11107341.

It is an arithmetic number, because the mean of its divisors is an integer number (11107341).

Almost surely, 2^22214681 is an apocalyptic number.

It is an amenable number.

22214681 is a deficient number, since it is larger than the sum of its proper divisors (1).

22214681 is an equidigital number, since it uses as much as digits as its factorization.

22214681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 26.

The square root of 22214681 is about 4713.2452726333. The cubic root of 22214681 is about 281.1124156033.

The spelling of 22214681 in words is "twenty-two million, two hundred fourteen thousand, six hundred eighty-one".