14121453221 has 4 divisors (see below), whose sum is σ = 14735429472. Its totient is φ = 13507476972.

The previous prime is 14121453217. The next prime is 14121453251. The reversal of 14121453221 is 12235412141.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12235412141 = 44909 ⋅272449.

It is a cyclic number.

It is not a de Polignac number, because 14121453221 - 2² = 14121453217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14121453211) 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, 306988091 + ... + 306988136.

It is an arithmetic number, because the mean of its divisors is an integer number (3683857368).

Almost surely, 2^14121453221 is an apocalyptic number.

It is an amenable number.

14121453221 is a deficient number, since it is larger than the sum of its proper divisors (613976251).

14121453221 is an equidigital number, since it uses as much as digits as its factorization.

14121453221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613976250.

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

Adding to 14121453221 its reverse (12235412141), we get a palindrome (26356865362).

The spelling of 14121453221 in words is "fourteen billion, one hundred twenty-one million, four hundred fifty-three thousand, two hundred twenty-one".