212134431412 has 12 divisors (see below), whose sum is σ = 371238499296. Its totient is φ = 106066288760.

The previous prime is 212134431401. The next prime is 212134431419. The reversal of 212134431412 is 214134431212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212134431419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694737 + ... + 952327.

It is an arithmetic number, because the mean of its divisors is an integer number (30936541608).

Almost surely, 2^212134431412 is an apocalyptic number.

It is an amenable number.

212134431412 is a deficient number, since it is larger than the sum of its proper divisors (159104067884).

212134431412 is a wasteful number, since it uses less digits than its factorization.

212134431412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463478 (or 463476 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 212134431412 its reverse (214134431212), we get a palindrome (426268862624).

The spelling of 212134431412 in words is "two hundred twelve billion, one hundred thirty-four million, four hundred thirty-one thousand, four hundred twelve".