322120214551 has 4 divisors (see below), whose sum is σ = 322443305032. Its totient is φ = 321797124072.

The previous prime is 322120214543. The next prime is 322120214579. The reversal of 322120214551 is 155412021223.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 322120214551 - 2³ = 322120214543 is a prime.

It is a super-2 number, since 2×322120214551² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322120214501) 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 3 ways as a sum of consecutive naturals, for example, 161543745 + ... + 161545738.

It is an arithmetic number, because the mean of its divisors is an integer number (80610826258).

Almost surely, 2^322120214551 is an apocalyptic number.

322120214551 is a deficient number, since it is larger than the sum of its proper divisors (323090481).

322120214551 is an equidigital number, since it uses as much as digits as its factorization.

322120214551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323090480.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 322120214551 its reverse (155412021223), we get a palindrome (477532235774).

The spelling of 322120214551 in words is "three hundred twenty-two billion, one hundred twenty million, two hundred fourteen thousand, five hundred fifty-one".