212112121211234 has 4 divisors (see below), whose sum is σ = 318168181816854. Its totient is φ = 106056060605616.

The previous prime is 212112121211233. The next prime is 212112121211239. The reversal of 212112121211234 is 432112121211212.

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

It can be written as a sum of positive squares in only one way, i.e., 144387500338225 + 67724620873009 = 12016135^2 + 8229497^2 .

It is not an unprimeable number, because it can be changed into a prime (212112121211233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53028030302807 + ... + 53028030302810.

Almost surely, 2^{212112121211234} is an apocalyptic number.

212112121211234 is a deficient number, since it is larger than the sum of its proper divisors (106056060605620).

212112121211234 is a wasteful number, since it uses less digits than its factorization.

212112121211234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106056060605619.

The product of its digits is 768, while the sum is 26.

Adding to 212112121211234 its reverse (432112121211212), we get a palindrome (644224242422446).

The spelling of 212112121211234 in words is "two hundred twelve trillion, one hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand, two hundred thirty-four".