212123321212 has 24 divisors (see below), whose sum is σ = 405008013312. Its totient is φ = 96408903600.

The previous prime is 212123321183. The next prime is 212123321219.

212123321212 is nontrivially palindromic in base 10.

212123321212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212123321219) 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, 134853 + ... + 665155.

It is an arithmetic number, because the mean of its divisors is an integer number (16875333888).

Almost surely, 2^212123321212 is an apocalyptic number.

212123321212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212123321212 is a deficient number, since it is larger than the sum of its proper divisors (192884692100).

212123321212 is a wasteful number, since it uses less digits than its factorization.

212123321212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539409 (or 539407 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

It can be divided in two parts, 212123 and 321212, that added together give a palindrome (533335).

The spelling of 212123321212 in words is "two hundred twelve billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred twelve".