213112442044044 has 72 divisors (see below), whose sum is σ = 540950352983040. Its totient is φ = 70740864345600.

The previous prime is 213112442043989. The next prime is 213112442044049. The reversal of 213112442044044 is 440440244211312.

213112442044044 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 1 + 2 + 44 + 204 + 404 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (213112442044049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 352889589 + ... + 353492979.

Almost surely, 2^{213112442044044} is an apocalyptic number.

It is an amenable number.

213112442044044 is an abundant number, since it is smaller than the sum of its proper divisors (327837910938996).

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

213112442044044 is a wasteful number, since it uses less digits than its factorization.

213112442044044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644351 (or 644346 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 36.

Adding to 213112442044044 its reverse (440440244211312), we get a palindrome (653552686255356).

The spelling of 213112442044044 in words is "two hundred thirteen trillion, one hundred twelve billion, four hundred forty-two million, forty-four thousand, forty-four".