221442613466 has 8 divisors (see below), whose sum is σ = 332191537824. Its totient is φ = 110712100860.

The previous prime is 221442613451. The next prime is 221442613487. The reversal of 221442613466 is 664316244122.

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

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, 4572830 + ... + 4621001.

It is an arithmetic number, because the mean of its divisors is an integer number (41523942228).

Almost surely, 2^221442613466 is an apocalyptic number.

221442613466 is a deficient number, since it is larger than the sum of its proper divisors (110748924358).

221442613466 is a wasteful number, since it uses less digits than its factorization.

221442613466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9205876.

The product of its digits is 331776, while the sum is 41.

Adding to 221442613466 its reverse (664316244122), we get a palindrome (885758857588).

The spelling of 221442613466 in words is "two hundred twenty-one billion, four hundred forty-two million, six hundred thirteen thousand, four hundred sixty-six".