221021000120014 has 4 divisors (see below), whose sum is σ = 331531500180024. Its totient is φ = 110510500060006.

The previous prime is 221021000119981. The next prime is 221021000120087. The reversal of 221021000120014 is 410021000120122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221021000120014.

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, 55255250030002 + ... + 55255250030005.

It is an arithmetic number, because the mean of its divisors is an integer number (82882875045006).

Almost surely, 2^{221021000120014} is an apocalyptic number.

221021000120014 is a deficient number, since it is larger than the sum of its proper divisors (110510500060010).

221021000120014 is a wasteful number, since it uses less digits than its factorization.

221021000120014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110510500060009.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221021000120014 its reverse (410021000120122), we get a palindrome (631042000240136).

The spelling of 221021000120014 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred twenty thousand, fourteen".