212303355123 has 16 divisors (see below), whose sum is σ = 285497049600. Its totient is φ = 140327789280.

The previous prime is 212303355119. The next prime is 212303355139. The reversal of 212303355123 is 321553303212.

It is a happy number.

212303355123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212303355123 - 2² = 212303355119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212303355223) 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 15 ways as a sum of consecutive naturals, for example, 482313 + ... + 810698.

It is an arithmetic number, because the mean of its divisors is an integer number (17843565600).

Almost surely, 2^212303355123 is an apocalyptic number.

212303355123 is a deficient number, since it is larger than the sum of its proper divisors (73193694477).

212303355123 is a wasteful number, since it uses less digits than its factorization.

212303355123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293482.

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 212303355123 its reverse (321553303212), we get a palindrome (533856658335).

The spelling of 212303355123 in words is "two hundred twelve billion, three hundred three million, three hundred fifty-five thousand, one hundred twenty-three".