213212121212312 has 16 divisors (see below), whose sum is σ = 403730873089200. Its totient is φ = 105550555055200.

The previous prime is 213212121212291. The next prime is 213212121212333.

213212121212312 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (213212121212291) and next prime (213212121212333).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131938193012 + ... + 131938194627.

It is an arithmetic number, because the mean of its divisors is an integer number (25233179568075).

Almost surely, 2^{213212121212312} is an apocalyptic number.

It is an amenable number.

213212121212312 is a deficient number, since it is larger than the sum of its proper divisors (190518751876888).

213212121212312 is a wasteful number, since it uses less digits than its factorization.

213212121212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263876387746 (or 263876387742 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The spelling of 213212121212312 in words is "two hundred thirteen trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, three hundred twelve".