221330144132 has 6 divisors (see below), whose sum is σ = 387327752238. Its totient is φ = 110665072064.

The previous prime is 221330144051. The next prime is 221330144143. The reversal of 221330144132 is 231441033122.

221330144132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 166491745156 + 54838398976 = 408034^2 + 234176^2 .

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 as a sum of consecutive naturals, namely, 27666268013 + ... + 27666268020.

It is an arithmetic number, because the mean of its divisors is an integer number (64554625373).

Almost surely, 2^221330144132 is an apocalyptic number.

It is an amenable number.

221330144132 is a deficient number, since it is larger than the sum of its proper divisors (165997608106).

221330144132 is a wasteful number, since it uses less digits than its factorization.

221330144132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55332536037 (or 55332536035 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221330144132 its reverse (231441033122), we get a palindrome (452771177254).

The spelling of 221330144132 in words is "two hundred twenty-one billion, three hundred thirty million, one hundred forty-four thousand, one hundred thirty-two".