22180137 has 16 divisors (see below), whose sum is σ = 34117632. Its totient is φ = 12554640.

The previous prime is 22180111. The next prime is 22180141. The reversal of 22180137 is 73108122.

It is not a de Polignac number, because 22180137 - 2⁷ = 22180009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22180177) 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 15 ways as a sum of consecutive naturals, for example, 2689 + ... + 7182.

It is an arithmetic number, because the mean of its divisors is an integer number (2132352).

Almost surely, 2^22180137 is an apocalyptic number.

It is an amenable number.

22180137 is a deficient number, since it is larger than the sum of its proper divisors (11937495).

22180137 is a wasteful number, since it uses less digits than its factorization.

22180137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9988.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 22180137 is about 4709.5792805727. The cubic root of 22180137 is about 280.9666293540.

Adding to 22180137 its reverse (73108122), we get a palindrome (95288259).

The spelling of 22180137 in words is "twenty-two million, one hundred eighty thousand, one hundred thirty-seven".