551212223321 has 8 divisors (see below), whose sum is σ = 554815835904. Its totient is φ = 547620033600.

The previous prime is 551212223227. The next prime is 551212223323. The reversal of 551212223321 is 123322212155.

It is a happy number.

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 551212223321 - 2³⁴ = 534032354137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551212223323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2758880 + ... + 2951921.

It is an arithmetic number, because the mean of its divisors is an integer number (69351979488).

Almost surely, 2^551212223321 is an apocalyptic number.

It is an amenable number.

551212223321 is a deficient number, since it is larger than the sum of its proper divisors (3603612583).

551212223321 is a wasteful number, since it uses less digits than its factorization.

551212223321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5711431.

The product of its digits is 7200, while the sum is 29.

Adding to 551212223321 its reverse (123322212155), we get a palindrome (674534435476).

The spelling of 551212223321 in words is "five hundred fifty-one billion, two hundred twelve million, two hundred twenty-three thousand, three hundred twenty-one".