22222516 has 6 divisors (see below), whose sum is σ = 38889410. Its totient is φ = 11111256.

The previous prime is 22222513. The next prime is 22222517. The reversal of 22222516 is 61522222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 22184100 + 38416 = 4710^2 + 196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777811 + ... + 2777818.

Almost surely, 2^22222516 is an apocalyptic number.

It is an amenable number.

22222516 is a deficient number, since it is larger than the sum of its proper divisors (16666894).

22222516 is a wasteful number, since it uses less digits than its factorization.

22222516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555633 (or 5555631 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 22222516 is about 4714.0763676462. The cubic root of 22222516 is about 281.1454606707.

Adding to 22222516 its reverse (61522222), we get a palindrome (83744738).

The spelling of 22222516 in words is "twenty-two million, two hundred twenty-two thousand, five hundred sixteen".