221221231000214 has 4 divisors (see below), whose sum is σ = 331831846500324. Its totient is φ = 110610615500106.

The previous prime is 221221231000193. The next prime is 221221231000247. The reversal of 221221231000214 is 412000132122122.

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 221221231000214.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55305307750052 + ... + 55305307750055.

It is an arithmetic number, because the mean of its divisors is an integer number (82957961625081).

Almost surely, 2^{221221231000214} is an apocalyptic number.

221221231000214 is a deficient number, since it is larger than the sum of its proper divisors (110610615500110).

221221231000214 is a wasteful number, since it uses less digits than its factorization.

221221231000214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110610615500109.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 221221231000214 its reverse (412000132122122), we get a palindrome (633221363122336).

The spelling of 221221231000214 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, two hundred thirty-one million, two hundred fourteen", and thus it is an aban number.