2123214245 has 8 divisors (see below), whose sum is σ = 2556554616. Its totient is φ = 1692773056.

The previous prime is 2123214241. The next prime is 2123214277. The reversal of 2123214245 is 5424123212.

It can be written as a sum of positive squares in 4 ways, for example, as 1373221249 + 749992996 = 37057^2 + 27386^2 .

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 2123214245 - 2² = 2123214241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123214241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723182 + ... + 726111.

It is an arithmetic number, because the mean of its divisors is an integer number (319569327).

Almost surely, 2^2123214245 is an apocalyptic number.

It is an amenable number.

2123214245 is a deficient number, since it is larger than the sum of its proper divisors (433340371).

2123214245 is a wasteful number, since it uses less digits than its factorization.

2123214245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449591.

The product of its digits is 3840, while the sum is 26.

The square root of 2123214245 is about 46078.3489830094. The cubic root of 2123214245 is about 1285.2805627196.

Adding to 2123214245 its reverse (5424123212), we get a palindrome (7547337457).

The spelling of 2123214245 in words is "two billion, one hundred twenty-three million, two hundred fourteen thousand, two hundred forty-five".