22011716 has 6 divisors (see below), whose sum is σ = 38520510. Its totient is φ = 11005856.

The previous prime is 22011701. The next prime is 22011721. The reversal of 22011716 is 61711022.

It can be written as a sum of positive squares in only one way, i.e., 20666116 + 1345600 = 4546^2 + 1160^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2751461 + ... + 2751468.

It is an arithmetic number, because the mean of its divisors is an integer number (6420085).

Almost surely, 2^22011716 is an apocalyptic number.

It is an amenable number.

22011716 is a deficient number, since it is larger than the sum of its proper divisors (16508794).

22011716 is a wasteful number, since it uses less digits than its factorization.

22011716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502933 (or 5502931 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 22011716 is about 4691.6645233861. The cubic root of 22011716 is about 280.2536646821.

Adding to 22011716 its reverse (61711022), we get a palindrome (83722738).

The spelling of 22011716 in words is "twenty-two million, eleven thousand, seven hundred sixteen".