22261123 has 2 divisors, whose sum is σ = 22261124. Its totient is φ = 22261122.

The previous prime is 22261111. The next prime is 22261147. The reversal of 22261123 is 32116222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22261123 - 2⁹ = 22260611 is a prime.

It is a super-2 number, since 2×22261123² = 991115194442258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22261123.

It is not a weakly prime, because it can be changed into another prime (22261153) 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 as a sum of consecutive naturals, namely, 11130561 + 11130562.

It is an arithmetic number, because the mean of its divisors is an integer number (11130562).

Almost surely, 2^22261123 is an apocalyptic number.

22261123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22261123 is an equidigital number, since it uses as much as digits as its factorization.

22261123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 22261123 is about 4718.1694543541. The cubic root of 22261123 is about 281.3081770680.

Adding to 22261123 its reverse (32116222), we get a palindrome (54377345).

The spelling of 22261123 in words is "twenty-two million, two hundred sixty-one thousand, one hundred twenty-three".