221001221134 has 16 divisors (see below), whose sum is σ = 332743204080. Its totient is φ = 110086966080.

The previous prime is 221001221099. The next prime is 221001221159. The reversal of 221001221134 is 431122100122.

221001221134 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 3264877 + ... + 3331879.

It is an arithmetic number, because the mean of its divisors is an integer number (20796450255).

Almost surely, 2^221001221134 is an apocalyptic number.

221001221134 is a deficient number, since it is larger than the sum of its proper divisors (111741982946).

221001221134 is a wasteful number, since it uses less digits than its factorization.

221001221134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73155.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221001221134 its reverse (431122100122), we get a palindrome (652123321256).

The spelling of 221001221134 in words is "two hundred twenty-one billion, one million, two hundred twenty-one thousand, one hundred thirty-four".