550206430221 has 16 divisors (see below), whose sum is σ = 838806652544. Its totient is φ = 314254854144.

The previous prime is 550206430199. The next prime is 550206430247. The reversal of 550206430221 is 122034602055.

It is not a de Polignac number, because 550206430221 - 2¹¹ = 550206428173 is a prime.

It is a super-2 number, since 2×550206430221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550206430321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6155416 + ... + 6244161.

It is an arithmetic number, because the mean of its divisors is an integer number (52425415784).

Almost surely, 2^550206430221 is an apocalyptic number.

It is an amenable number.

550206430221 is a deficient number, since it is larger than the sum of its proper divisors (288600222323).

550206430221 is a wasteful number, since it uses less digits than its factorization.

550206430221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12401700.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 550206430221 in words is "five hundred fifty billion, two hundred six million, four hundred thirty thousand, two hundred twenty-one".