221112201210534 has 48 divisors (see below), whose sum is σ = 485641981890000. Its totient is φ = 72693994952448.

The previous prime is 221112201210533. The next prime is 221112201210559. The reversal of 221112201210534 is 435012102211122.

221112201210534 is a `hidden beast` number, since 2 + 2 + 1 + 1 + 1 + 2 + 2 + 0 + 121 + 0 + 534 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 221112201210498 and 221112201210507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221112201210533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286393677 + ... + 287164695.

It is an arithmetic number, because the mean of its divisors is an integer number (10117541289375).

Almost surely, 2^{221112201210534} is an apocalyptic number.

221112201210534 is an abundant number, since it is smaller than the sum of its proper divisors (264529780679466).

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

221112201210534 is a wasteful number, since it uses less digits than its factorization.

221112201210534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989349 (or 989346 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 221112201210534 its reverse (435012102211122), we get a palindrome (656124303421656).

The spelling of 221112201210534 in words is "two hundred twenty-one trillion, one hundred twelve billion, two hundred one million, two hundred ten thousand, five hundred thirty-four".