221421242595 has 64 divisors (see below), whose sum is σ = 409197035520. Its totient is φ = 100148400000.

The previous prime is 221421242557. The next prime is 221421242683. The reversal of 221421242595 is 595242124122.

221421242595 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221421242595 - 2⁷ = 221421242467 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3951786 + ... + 4007424.

It is an arithmetic number, because the mean of its divisors is an integer number (6393703680).

Almost surely, 2^221421242595 is an apocalyptic number.

221421242595 is a deficient number, since it is larger than the sum of its proper divisors (187775792925).

221421242595 is a wasteful number, since it uses less digits than its factorization.

221421242595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56056.

The product of its digits is 115200, while the sum is 39.

The spelling of 221421242595 in words is "two hundred twenty-one billion, four hundred twenty-one million, two hundred forty-two thousand, five hundred ninety-five".