222921616 has 10 divisors (see below), whose sum is σ = 431910662. Its totient is φ = 111460800.

The previous prime is 222921613. The next prime is 222921679. The reversal of 222921616 is 616129222.

It can be written as a sum of positive squares in only one way, i.e., 218921616 + 4000000 = 14796^2 + 2000^2 .

It is not an unprimeable number, because it can be changed into a prime (222921613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6966285 + ... + 6966316.

Almost surely, 2^222921616 is an apocalyptic number.

It is an amenable number.

222921616 is a deficient number, since it is larger than the sum of its proper divisors (208989046).

222921616 is a wasteful number, since it uses less digits than its factorization.

222921616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13932609 (or 13932603 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 222921616 is about 14930.5598019632. The cubic root of 222921616 is about 606.3416402229.

The spelling of 222921616 in words is "two hundred twenty-two million, nine hundred twenty-one thousand, six hundred sixteen".