221416616446 has 4 divisors (see below), whose sum is σ = 332124924672. Its totient is φ = 110708308222.

The previous prime is 221416616441. The next prime is 221416616579. The reversal of 221416616446 is 644616614122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221416616441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55354154110 + ... + 55354154113.

It is an arithmetic number, because the mean of its divisors is an integer number (83031231168).

Almost surely, 2^221416616446 is an apocalyptic number.

221416616446 is a deficient number, since it is larger than the sum of its proper divisors (110708308226).

221416616446 is a wasteful number, since it uses less digits than its factorization.

221416616446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110708308225.

The product of its digits is 331776, while the sum is 43.

The spelling of 221416616446 in words is "two hundred twenty-one billion, four hundred sixteen million, six hundred sixteen thousand, four hundred forty-six".