221235542824082 has 8 divisors (see below), whose sum is σ = 331858844106636. Its totient is φ = 110615928121872.

The previous prime is 221235542824039. The next prime is 221235542824091. The reversal of 221235542824082 is 280428245532122.

It can be written as a sum of positive squares in 2 ways, for example, as 217539225122521 + 3696317701561 = 14749211^2 + 1922581^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 221235542824082.

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, 921495053 + ... + 921735104.

Almost surely, 2^{221235542824082} is an apocalyptic number.

221235542824082 is a deficient number, since it is larger than the sum of its proper divisors (110623301282554).

221235542824082 is a wasteful number, since it uses less digits than its factorization.

221235542824082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843290172.

The product of its (nonzero) digits is 4915200, while the sum is 50.

The spelling of 221235542824082 in words is "two hundred twenty-one trillion, two hundred thirty-five billion, five hundred forty-two million, eight hundred twenty-four thousand, eighty-two".