221475541604 has 12 divisors (see below), whose sum is σ = 387803306604. Its totient is φ = 110674596864.

The previous prime is 221475541597. The next prime is 221475541709. The reversal of 221475541604 is 406145574122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2219352100 + 219256189504 = 47110^2 + 468248^2 .

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 3 ways as a sum of consecutive naturals, for example, 15785597 + ... + 15799620.

It is an arithmetic number, because the mean of its divisors is an integer number (32316942217).

Almost surely, 2^221475541604 is an apocalyptic number.

It is an amenable number.

221475541604 is a deficient number, since it is larger than the sum of its proper divisors (166327765000).

221475541604 is a wasteful number, since it uses less digits than its factorization.

221475541604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31586974 (or 31586972 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 221475541604 in words is "two hundred twenty-one billion, four hundred seventy-five million, five hundred forty-one thousand, six hundred four".