22211389 has 2 divisors, whose sum is σ = 22211390. Its totient is φ = 22211388.

The previous prime is 22211377. The next prime is 22211417. The reversal of 22211389 is 98311222.

It is an a-pointer prime, because the next prime (22211417) can be obtained adding 22211389 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21930489 + 280900 = 4683^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 22211389 - 2¹⁹ = 21687101 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22211339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105694 + 11105695.

It is an arithmetic number, because the mean of its divisors is an integer number (11105695).

Almost surely, 2^22211389 is an apocalyptic number.

It is an amenable number.

22211389 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211389 is an equidigital number, since it uses as much as digits as its factorization.

22211389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 22211389 is about 4712.8960311044. The cubic root of 22211389 is about 281.0985288740.

It can be divided in two parts, 222 and 11389, that added together give a palindrome (11611).

The spelling of 22211389 in words is "twenty-two million, two hundred eleven thousand, three hundred eighty-nine".