221616073046 has 8 divisors (see below), whose sum is σ = 332905188504. Its totient is φ = 110647676880.

The previous prime is 221616073039. The next prime is 221616073067. The reversal of 221616073046 is 640370616122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×221616073046² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 80178095 + ... + 80180858.

It is an arithmetic number, because the mean of its divisors is an integer number (41613148563).

Almost surely, 2^221616073046 is an apocalyptic number.

221616073046 is a deficient number, since it is larger than the sum of its proper divisors (111289115458).

221616073046 is a wasteful number, since it uses less digits than its factorization.

221616073046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160359646.

The product of its (nonzero) digits is 72576, while the sum is 38.

Adding to 221616073046 its reverse (640370616122), we get a palindrome (861986689168).

The spelling of 221616073046 in words is "two hundred twenty-one billion, six hundred sixteen million, seventy-three thousand, forty-six".