212243512031234 has 16 divisors (see below), whose sum is σ = 321213806802072. Its totient is φ = 105172425243648.

The previous prime is 212243512031207. The next prime is 212243512031263. The reversal of 212243512031234 is 432130215342212.

It can be written as a sum of positive squares in 4 ways, for example, as 95155206091009 + 117088305940225 = 9754753^2 + 10820735^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212243512031194 and 212243512031203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43200659 + ... + 47862134.

Almost surely, 2^{212243512031234} is an apocalyptic number.

212243512031234 is a deficient number, since it is larger than the sum of its proper divisors (108970294770838).

212243512031234 is a wasteful number, since it uses less digits than its factorization.

212243512031234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91073221.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 212243512031234 its reverse (432130215342212), we get a palindrome (644373727373446).

The spelling of 212243512031234 in words is "two hundred twelve trillion, two hundred forty-three billion, five hundred twelve million, thirty-one thousand, two hundred thirty-four".