22181026 has 12 divisors (see below), whose sum is σ = 38703798. Its totient is φ = 9506112.

The previous prime is 22181023. The next prime is 22181059. The reversal of 22181026 is 62018122.

It can be written as a sum of positive squares in only one way, i.e., 21150801 + 1030225 = 4599^2 + 1015^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22180988 and 22181006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22181023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113071 + ... + 113266.

Almost surely, 2^22181026 is an apocalyptic number.

22181026 is a deficient number, since it is larger than the sum of its proper divisors (16522772).

22181026 is a wasteful number, since it uses less digits than its factorization.

22181026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226353 (or 226346 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 22181026 is about 4709.6736617307. The cubic root of 22181026 is about 280.9703831030.

Adding to 22181026 its reverse (62018122), we get a palindrome (84199148).

The spelling of 22181026 in words is "twenty-two million, one hundred eighty-one thousand, twenty-six".