22722061 has 4 divisors (see below), whose sum is σ = 22750300. Its totient is φ = 22693824.

The previous prime is 22722023. The next prime is 22722079. The reversal of 22722061 is 16022722.

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 5788836 + 16933225 = 2406^2 + 4115^2 .

It is a cyclic number.

It is not a de Polignac number, because 22722061 - 2¹¹ = 22720013 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 (22722961) 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, 12876 + ... + 14533.

It is an arithmetic number, because the mean of its divisors is an integer number (5687575).

Almost surely, 2^22722061 is an apocalyptic number.

It is an amenable number.

22722061 is a deficient number, since it is larger than the sum of its proper divisors (28239).

22722061 is an equidigital number, since it uses as much as digits as its factorization.

22722061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28238.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 22722061 is about 4766.7663043199. The cubic root of 22722061 is about 283.2365139395.

Adding to 22722061 its reverse (16022722), we get a palindrome (38744783).

The spelling of 22722061 in words is "twenty-two million, seven hundred twenty-two thousand, sixty-one".