22220516 has 12 divisors (see below), whose sum is σ = 38938620. Its totient is φ = 11095200.

The previous prime is 22220509. The next prime is 22220533. The reversal of 22220516 is 61502222.

It can be written as a sum of positive squares in 2 ways, for example, as 10863616 + 11356900 = 3296^2 + 3370^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35 + ... + 6666.

It is an arithmetic number, because the mean of its divisors is an integer number (3244885).

Almost surely, 2^22220516 is an apocalyptic number.

It is an amenable number.

22220516 is a deficient number, since it is larger than the sum of its proper divisors (16718104).

22220516 is a wasteful number, since it uses less digits than its factorization.

22220516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7534 (or 7532 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22220516 is about 4713.8642322409. The cubic root of 22220516 is about 281.1370261653.

Adding to 22220516 its reverse (61502222), we get a palindrome (83722738).

The spelling of 22220516 in words is "twenty-two million, two hundred twenty thousand, five hundred sixteen".