1550072230221 has 8 divisors (see below), whose sum is σ = 2175539972320. Its totient is φ = 978992987472.

The previous prime is 1550072230181. The next prime is 1550072230303. The reversal of 1550072230221 is 1220322700551.

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

It is not a de Polignac number, because 1550072230221 - 2¹⁰ = 1550072229197 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 (1550072230121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13597124770 + ... + 13597124883.

It is an arithmetic number, because the mean of its divisors is an integer number (271942496540).

Almost surely, 2^{1550072230221} is an apocalyptic number.

It is an amenable number.

1550072230221 is a deficient number, since it is larger than the sum of its proper divisors (625467742099).

1550072230221 is a wasteful number, since it uses less digits than its factorization.

1550072230221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27194249675.

The product of its (nonzero) digits is 8400, while the sum is 30.

Adding to 1550072230221 its reverse (1220322700551), we get a palindrome (2770394930772).

The spelling of 1550072230221 in words is "one trillion, five hundred fifty billion, seventy-two million, two hundred thirty thousand, two hundred twenty-one".