221201201194 has 16 divisors (see below), whose sum is σ = 332782759368. Its totient is φ = 110273692672.

The previous prime is 221201201173. The next prime is 221201201201. The reversal of 221201201194 is 491102102122.

It can be written as a sum of positive squares in 4 ways, for example, as 218942575569 + 2258625625 = 467913^2 + 47525^2 .

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 7 ways as a sum of consecutive naturals, for example, 8173974 + ... + 8200990.

Almost surely, 2^221201201194 is an apocalyptic number.

221201201194 is a deficient number, since it is larger than the sum of its proper divisors (111581558174).

221201201194 is a wasteful number, since it uses less digits than its factorization.

221201201194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38969.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 221201201194 in words is "two hundred twenty-one billion, two hundred one million, two hundred one thousand, one hundred ninety-four".