221421330327706 has 16 divisors (see below), whose sum is σ = 350019626450400. Its totient is φ = 104761688164848.

The previous prime is 221421330327689. The next prime is 221421330327713. The reversal of 221421330327706 is 607723033124122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3391630405 + ... + 3391695688.

It is an arithmetic number, because the mean of its divisors is an integer number (21876226653150).

Almost surely, 2^{221421330327706} is an apocalyptic number.

221421330327706 is a deficient number, since it is larger than the sum of its proper divisors (128598296122694).

221421330327706 is a wasteful number, since it uses less digits than its factorization.

221421330327706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6783326973.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 221421330327706 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, three hundred thirty million, three hundred twenty-seven thousand, seven hundred six".