15020352041221 has 4 divisors (see below), whose sum is σ = 15020456915200. Its totient is φ = 15020247167244.

The previous prime is 15020352041213. The next prime is 15020352041257. The reversal of 15020352041221 is 12214025302051.

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 not a de Polignac number, because 15020352041221 - 2³ = 15020352041213 is a prime.

It is a super-2 number, since 2×15020352041221² (a number of 27 digits) contains 22 as substring.

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 15020352041221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15020352741221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52221861 + ... + 52508698.

It is an arithmetic number, because the mean of its divisors is an integer number (3755114228800).

Almost surely, 2^{15020352041221} is an apocalyptic number.

It is an amenable number.

15020352041221 is a deficient number, since it is larger than the sum of its proper divisors (104873979).

15020352041221 is a wasteful number, since it uses less digits than its factorization.

15020352041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104873978.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 15020352041221 its reverse (12214025302051), we get a palindrome (27234377343272).

The spelling of 15020352041221 in words is "fifteen trillion, twenty billion, three hundred fifty-two million, forty-one thousand, two hundred twenty-one".