221341616 has 20 divisors (see below), whose sum is σ = 439310424. Its totient is φ = 107971200.

The previous prime is 221341607. The next prime is 221341639. The reversal of 221341616 is 616143122.

221341616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221341616² = 97984221946982912, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

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, 168050 + ... + 169361.

Almost surely, 2^221341616 is an apocalyptic number.

It is an amenable number.

221341616 is a deficient number, since it is larger than the sum of its proper divisors (217968808).

221341616 is a wasteful number, since it uses less digits than its factorization.

221341616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337460 (or 337454 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 221341616 is about 14877.5541000529. The cubic root of 221341616 is about 604.9057212561.

Adding to 221341616 its reverse (616143122), we get a palindrome (837484738).

The spelling of 221341616 in words is "two hundred twenty-one million, three hundred forty-one thousand, six hundred sixteen".