550213152121 has 8 divisors (see below), whose sum is σ = 565121120264. Its totient is φ = 535307149440.

The previous prime is 550213152101. The next prime is 550213152179. The reversal of 550213152121 is 121251312055.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 118879454521 + 431333697600 = 344789^2 + 656760^2 .

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 550213152121 - 2³³ = 541623217529 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 550213152121.

It is not an unprimeable number, because it can be changed into a prime (550213152101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85141 + ... + 1052461.

It is an arithmetic number, because the mean of its divisors is an integer number (70640140033).

Almost surely, 2^550213152121 is an apocalyptic number.

It is an amenable number.

550213152121 is a deficient number, since it is larger than the sum of its proper divisors (14907968143).

550213152121 is a wasteful number, since it uses less digits than its factorization.

550213152121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982731.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 550213152121 its reverse (121251312055), we get a palindrome (671464464176).

The spelling of 550213152121 in words is "five hundred fifty billion, two hundred thirteen million, one hundred fifty-two thousand, one hundred twenty-one".