221144234302 has 4 divisors (see below), whose sum is σ = 331716351456. Its totient is φ = 110572117150.

The previous prime is 221144234291. The next prime is 221144234321. The reversal of 221144234302 is 203432441122.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55286058574 + ... + 55286058577.

It is an arithmetic number, because the mean of its divisors is an integer number (82929087864).

Almost surely, 2^221144234302 is an apocalyptic number.

221144234302 is a deficient number, since it is larger than the sum of its proper divisors (110572117154).

221144234302 is a wasteful number, since it uses less digits than its factorization.

221144234302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110572117153.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 221144234302 its reverse (203432441122), we get a palindrome (424576675424).

The spelling of 221144234302 in words is "two hundred twenty-one billion, one hundred forty-four million, two hundred thirty-four thousand, three hundred two".