22140061 has 4 divisors (see below), whose sum is σ = 22557852. Its totient is φ = 21722272.

The previous prime is 22140049. The next prime is 22140071. The reversal of 22140061 is 16004122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9672100 + 12467961 = 3110^2 + 3531^2 .

It is a cyclic number.

It is not a de Polignac number, because 22140061 - 2⁵ = 22140029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140071) 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 3 ways as a sum of consecutive naturals, for example, 208816 + ... + 208921.

It is an arithmetic number, because the mean of its divisors is an integer number (5639463).

Almost surely, 2^22140061 is an apocalyptic number.

It is an amenable number.

22140061 is a deficient number, since it is larger than the sum of its proper divisors (417791).

22140061 is an equidigital number, since it uses as much as digits as its factorization.

22140061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417790.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 22140061 is about 4705.3226244329. The cubic root of 22140061 is about 280.7973065775.

Adding to 22140061 its reverse (16004122), we get a palindrome (38144183).

The spelling of 22140061 in words is "twenty-two million, one hundred forty thousand, sixty-one".