212134431212 has 24 divisors (see below), whose sum is σ = 406752422160. Its totient is φ = 96003668160.

The previous prime is 212134431143. The next prime is 212134431217.

It is a happy number.

212134431212 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (212134431217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10516643 + ... + 10536794.

It is an arithmetic number, because the mean of its divisors is an integer number (16948017590).

Almost surely, 2^212134431212 is an apocalyptic number.

212134431212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212134431212 is a deficient number, since it is larger than the sum of its proper divisors (194617990948).

212134431212 is a wasteful number, since it uses less digits than its factorization.

212134431212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21053681 (or 21053679 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

It can be divided in two parts, 212134 and 431212, that added together give a palindrome (643346).

The spelling of 212134431212 in words is "two hundred twelve billion, one hundred thirty-four million, four hundred thirty-one thousand, two hundred twelve".