22026281 has 2 divisors, whose sum is σ = 22026282. Its totient is φ = 22026280.

The previous prime is 22026269. The next prime is 22026289. The reversal of 22026281 is 18262022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16736281 + 5290000 = 4091^2 + 2300^2 .

It is a cyclic number.

It is not a de Polignac number, because 22026281 - 2¹⁸ = 21764137 is a prime.

It is a super-2 number, since 2×22026281² = 970314109381922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22026289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11013140 + 11013141.

It is an arithmetic number, because the mean of its divisors is an integer number (11013141).

Almost surely, 2^22026281 is an apocalyptic number.

It is an amenable number.

22026281 is a deficient number, since it is larger than the sum of its proper divisors (1).

22026281 is an equidigital number, since it uses as much as digits as its factorization.

22026281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 22026281 is about 4693.2164876553. The cubic root of 22026281 is about 280.3154650227.

The spelling of 22026281 in words is "twenty-two million, twenty-six thousand, two hundred eighty-one".