551213334121 has 12 divisors (see below), whose sum is σ = 584152343632. Its totient is φ = 519829060464.

The previous prime is 551213334103. The next prime is 551213334127. The reversal of 551213334121 is 121433312155.

It is not a de Polignac number, because 551213334121 - 2¹¹ = 551213332073 is a prime.

It is a super-2 number, since 2×551213334121² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551213334127) 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 11 ways as a sum of consecutive naturals, for example, 7585071 + ... + 7657396.

Almost surely, 2^551213334121 is an apocalyptic number.

It is an amenable number.

551213334121 is a deficient number, since it is larger than the sum of its proper divisors (32939009511).

551213334121 is a wasteful number, since it uses less digits than its factorization.

551213334121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15242568 (or 15242539 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

Adding to 551213334121 its reverse (121433312155), we get a palindrome (672646646276).

The spelling of 551213334121 in words is "five hundred fifty-one billion, two hundred thirteen million, three hundred thirty-four thousand, one hundred twenty-one".