2122305251 has 4 divisors (see below), whose sum is σ = 2315242104. Its totient is φ = 1929368400.

The previous prime is 2122305221. The next prime is 2122305259. The reversal of 2122305251 is 1525032212.

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 2122305251 - 2¹⁰ = 2122304227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122305259) 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, 96468410 + ... + 96468431.

It is an arithmetic number, because the mean of its divisors is an integer number (578810526).

Almost surely, 2^2122305251 is an apocalyptic number.

2122305251 is a deficient number, since it is larger than the sum of its proper divisors (192936853).

2122305251 is a wasteful number, since it uses less digits than its factorization.

2122305251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192936852.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2122305251 is about 46068.4843575301. The cubic root of 2122305251 is about 1285.0971177236.

Adding to 2122305251 its reverse (1525032212), we get a palindrome (3647337463).

The spelling of 2122305251 in words is "two billion, one hundred twenty-two million, three hundred five thousand, two hundred fifty-one".