14134251221 has 4 divisors (see below), whose sum is σ = 14878159200. Its totient is φ = 13390343244.

The previous prime is 14134251169. The next prime is 14134251223. The reversal of 14134251221 is 12215243141.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14134251221 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 (14134251223) 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, 371953961 + ... + 371953998.

It is an arithmetic number, because the mean of its divisors is an integer number (3719539800).

Almost surely, 2^14134251221 is an apocalyptic number.

It is an amenable number.

14134251221 is a deficient number, since it is larger than the sum of its proper divisors (743907979).

14134251221 is an equidigital number, since it uses as much as digits as its factorization.

14134251221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743907978.

The product of its digits is 1920, while the sum is 26.

Adding to 14134251221 its reverse (12215243141), we get a palindrome (26349494362).

The spelling of 14134251221 in words is "fourteen billion, one hundred thirty-four million, two hundred fifty-one thousand, two hundred twenty-one".