212133331144 has 24 divisors (see below), whose sum is σ = 462688771590. Its totient is φ = 90914284608.

The previous prime is 212133331141. The next prime is 212133331159. The reversal of 212133331144 is 441133331212.

It can be written as a sum of positive squares in only one way, i.e., 198614618244 + 13518712900 = 445662^2 + 116270^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (212133331141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 270577837 + ... + 270578620.

Almost surely, 2^212133331144 is an apocalyptic number.

It is an amenable number.

212133331144 is an abundant number, since it is smaller than the sum of its proper divisors (250555440446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212133331144 is a wasteful number, since it uses less digits than its factorization.

212133331144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541156477 (or 541156466 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

Adding to 212133331144 its reverse (441133331212), we get a palindrome (653266662356).

The spelling of 212133331144 in words is "two hundred twelve billion, one hundred thirty-three million, three hundred thirty-one thousand, one hundred forty-four".