22227261 has 16 divisors (see below), whose sum is σ = 33936000. Its totient is φ = 12676608.

The previous prime is 22227229. The next prime is 22227277. The reversal of 22227261 is 16272222.

It is not a de Polignac number, because 22227261 - 2⁵ = 22227229 is a prime.

It is a super-2 number, since 2×22227261² = 988102263124242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22227221) 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 in 15 ways as a sum of consecutive naturals, for example, 20665 + ... + 21713.

It is an arithmetic number, because the mean of its divisors is an integer number (2121000).

Almost surely, 2^22227261 is an apocalyptic number.

22227261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22227261 is a deficient number, since it is larger than the sum of its proper divisors (11708739).

22227261 is a wasteful number, since it uses less digits than its factorization.

22227261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068.

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

The square root of 22227261 is about 4714.5796207085. The cubic root of 22227261 is about 281.1654695102.

Adding to 22227261 its reverse (16272222), we get a palindrome (38499483).

The spelling of 22227261 in words is "twenty-two million, two hundred twenty-seven thousand, two hundred sixty-one".