22212726 has 16 divisors (see below), whose sum is σ = 44472000. Its totient is φ = 7396488.

The previous prime is 22212719. The next prime is 22212737. The reversal of 22212726 is 62721222.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22212696 and 22212705.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 9105 + ... + 11283.

It is an arithmetic number, because the mean of its divisors is an integer number (2779500).

Almost surely, 2^22212726 is an apocalyptic number.

22212726 is an abundant number, since it is smaller than the sum of its proper divisors (22259274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22212726 is a wasteful number, since it uses less digits than its factorization.

22212726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883.

The product of its digits is 1344, while the sum is 24.

The square root of 22212726 is about 4713.0378738134. The cubic root of 22212726 is about 281.1041689414.

Adding to 22212726 its reverse (62721222), we get a palindrome (84933948).

The spelling of 22212726 in words is "twenty-two million, two hundred twelve thousand, seven hundred twenty-six".