212312121213213 has 24 divisors (see below), whose sum is σ = 350484377880000. Its totient is φ = 121320908823744.

The previous prime is 212312121213209. The next prime is 212312121213221. The reversal of 212312121213213 is 312312121213212.

212312121213213 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 1 + 212 + 121 + 321 + 3 = 666.

It is not a de Polignac number, because 212312121213213 - 2² = 212312121213209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212312121253213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22524138 + ... + 30528036.

It is an arithmetic number, because the mean of its divisors is an integer number (14603515745000).

Almost surely, 2^{212312121213213} is an apocalyptic number.

It is an amenable number.

212312121213213 is a deficient number, since it is larger than the sum of its proper divisors (138172256666787).

212312121213213 is a wasteful number, since it uses less digits than its factorization.

212312121213213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424961 (or 8424958 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

Adding to 212312121213213 its reverse (312312121213212), we get a palindrome (524624242426425).

Subtracting 212312121213213 from its reverse (312312121213212), we obtain a palindrome (99999999999999).

The spelling of 212312121213213 in words is "two hundred twelve trillion, three hundred twelve billion, one hundred twenty-one million, two hundred thirteen thousand, two hundred thirteen".