26221222 has 16 divisors (see below), whose sum is σ = 40615344. Its totient is φ = 12688000.

The previous prime is 26221199. The next prime is 26221229. The reversal of 26221222 is 22212262.

It is a self number, because there is not a number n which added to its sum of digits gives 26221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26221229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9522 + ... + 11962.

It is an arithmetic number, because the mean of its divisors is an integer number (2538459).

Almost surely, 2^26221222 is an apocalyptic number.

26221222 is a deficient number, since it is larger than the sum of its proper divisors (14394122).

26221222 is a wasteful number, since it uses less digits than its factorization.

26221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615.

The product of its digits is 384, while the sum is 19.

The square root of 26221222 is about 5120.6661675997. Note that the first 3 decimals coincide. The cubic root of 26221222 is about 297.0874520932.

Adding to 26221222 its reverse (22212262), we get a palindrome (48433484).

It can be divided in two parts, 2622 and 1222, that added together give a square (3844 = 62²).

The spelling of 26221222 in words is "twenty-six million, two hundred twenty-one thousand, two hundred twenty-two".