14213111013221 has 4 divisors (see below), whose sum is σ = 14229773512332. Its totient is φ = 14196448514112.

The previous prime is 14213111013197. The next prime is 14213111013253. The reversal of 14213111013221 is 12231011131241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2878536390625 + 11334574622596 = 1696625^2 + 3366686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14213111013221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14213111513221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8331248276 + ... + 8331249981.

It is an arithmetic number, because the mean of its divisors is an integer number (3557443378083).

Almost surely, 2^{14213111013221} is an apocalyptic number.

It is an amenable number.

14213111013221 is a deficient number, since it is larger than the sum of its proper divisors (16662499111).

14213111013221 is an equidigital number, since it uses as much as digits as its factorization.

14213111013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16662499110.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 14213111013221 its reverse (12231011131241), we get a palindrome (26444122144462).

The spelling of 14213111013221 in words is "fourteen trillion, two hundred thirteen billion, one hundred eleven million, thirteen thousand, two hundred twenty-one".