221221313014 has 128 divisors (see below), whose sum is σ = 382505131008. Its totient is φ = 95273418240.

The previous prime is 221221312999. The next prime is 221221313017. The reversal of 221221313014 is 410313122122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221221313017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 408911584 + ... + 408912124.

It is an arithmetic number, because the mean of its divisors is an integer number (2988321336).

Almost surely, 2^221221313014 is an apocalyptic number.

221221313014 is a deficient number, since it is larger than the sum of its proper divisors (161283817994).

221221313014 is a wasteful number, since it uses less digits than its factorization.

221221313014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221221313014 its reverse (410313122122), we get a palindrome (631534435136).

The spelling of 221221313014 in words is "two hundred twenty-one billion, two hundred twenty-one million, three hundred thirteen thousand, fourteen".