22185801 has 24 divisors (see below), whose sum is σ = 36092160. Its totient is φ = 13010400.

The previous prime is 22185791. The next prime is 22185803. The reversal of 22185801 is 10858122.

It is not a de Polignac number, because 22185801 - 2¹⁰ = 22184777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22185803) 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 23 ways as a sum of consecutive naturals, for example, 546 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (1503840).

Almost surely, 2^22185801 is an apocalyptic number.

It is an amenable number.

22185801 is a deficient number, since it is larger than the sum of its proper divisors (13906359).

22185801 is a wasteful number, since it uses less digits than its factorization.

22185801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7277 (or 7274 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 22185801 is about 4710.1805697871. The cubic root of 22185801 is about 280.9905435367.

The spelling of 22185801 in words is "twenty-two million, one hundred eighty-five thousand, eight hundred one".