212133443244 has 12 divisors (see below), whose sum is σ = 494978034264. Its totient is φ = 70711147744.

The previous prime is 212133443243. The next prime is 212133443281. The reversal of 212133443244 is 442344331212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (212133443243) 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, 8838893457 + ... + 8838893480.

It is an arithmetic number, because the mean of its divisors is an integer number (41248169522).

It is a self-describing number.

Almost surely, 2^212133443244 is an apocalyptic number.

It is an amenable number.

212133443244 is an abundant number, since it is smaller than the sum of its proper divisors (282844591020).

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

212133443244 is a wasteful number, since it uses less digits than its factorization.

212133443244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17677786944 (or 17677786942 counting only the distinct ones).

The product of its digits is 55296, while the sum is 33.

Adding to 212133443244 its reverse (442344331212), we get a palindrome (654477774456).

The spelling of 212133443244 in words is "two hundred twelve billion, one hundred thirty-three million, four hundred forty-three thousand, two hundred forty-four".