15144314221 has 8 divisors (see below), whose sum is σ = 16046083584. Its totient is φ = 14243759040.

The previous prime is 15144314183. The next prime is 15144314233. The reversal of 15144314221 is 12241344151.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15144314221 - 2¹³ = 15144306029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15144314221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15144314621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277795 + ... + 327808.

It is an arithmetic number, because the mean of its divisors is an integer number (2005760448).

Almost surely, 2^15144314221 is an apocalyptic number.

It is an amenable number.

15144314221 is a deficient number, since it is larger than the sum of its proper divisors (901769363).

15144314221 is a wasteful number, since it uses less digits than its factorization.

15144314221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607091.

The product of its digits is 3840, while the sum is 28.

Adding to 15144314221 its reverse (12241344151), we get a palindrome (27385658372).

The spelling of 15144314221 in words is "fifteen billion, one hundred forty-four million, three hundred fourteen thousand, two hundred twenty-one".