221296858084 has 9 divisors (see below), whose sum is σ = 387271148131. Its totient is φ = 110647958620.

The previous prime is 221296858061. The next prime is 221296858093. The reversal of 221296858084 is 480858692122.

The square root of 221296858084 is 470422.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 823239 + ... + 1058449.

Almost surely, 2^221296858084 is an apocalyptic number.

221296858084 is the 470422-nd square number.

It is an amenable number.

221296858084 is a deficient number, since it is larger than the sum of its proper divisors (165974290047).

221296858084 is an frugal number, since it uses more digits than its factorization.

221296858084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470426 (or 235213 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 221296858084 in words is "two hundred twenty-one billion, two hundred ninety-six million, eight hundred fifty-eight thousand, eighty-four".