212344120045 has 4 divisors (see below), whose sum is σ = 254812944060. Its totient is φ = 169875296032.

The previous prime is 212344120033. The next prime is 212344120057. The reversal of 212344120045 is 540021443212.

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

It is an interprime number because it is at equal distance from previous prime (212344120033) and next prime (212344120057).

It can be written as a sum of positive squares in 2 ways, for example, as 38152246276 + 174191873769 = 195326^2 + 417363^2 .

It is a cyclic number.

It is not a de Polignac number, because 212344120045 - 2⁷ = 212344119917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212344119995 and 212344120022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21234412000 + ... + 21234412009.

It is an arithmetic number, because the mean of its divisors is an integer number (63703236015).

Almost surely, 2^212344120045 is an apocalyptic number.

It is an amenable number.

212344120045 is a deficient number, since it is larger than the sum of its proper divisors (42468824015).

212344120045 is an equidigital number, since it uses as much as digits as its factorization.

212344120045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42468824014.

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 212344120045 its reverse (540021443212), we get a palindrome (752365563257).

The spelling of 212344120045 in words is "two hundred twelve billion, three hundred forty-four million, one hundred twenty thousand, forty-five".