22166031 has 8 divisors (see below), whose sum is σ = 30112560. Its totient is φ = 14498432.

The previous prime is 22166029. The next prime is 22166033. The reversal of 22166031 is 13066122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22166029) and next prime (22166033).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22166031 - 2¹ = 22166029 is a prime.

It is a super-2 number, since 2×22166031² = 982665860585922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22165989 and 22166007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22166033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69546 + ... + 69863.

It is an arithmetic number, because the mean of its divisors is an integer number (3764070).

Almost surely, 2^22166031 is an apocalyptic number.

22166031 is a deficient number, since it is larger than the sum of its proper divisors (7946529).

22166031 is a wasteful number, since it uses less digits than its factorization.

22166031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139465.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 22166031 is about 4708.0814563896. The cubic root of 22166031 is about 280.9070541921.

Subtracting from 22166031 its reverse (13066122), we obtain a palindrome (9099909).

The spelling of 22166031 in words is "twenty-two million, one hundred sixty-six thousand, thirty-one".