212053531555 has 16 divisors (see below), whose sum is σ = 261611802144. Its totient is φ = 164907659520.

The previous prime is 212053531517. The next prime is 212053531631. The reversal of 212053531555 is 555135350212.

212053531555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212053531555 - 2¹⁷ = 212053400483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1810377 + ... + 1923946.

It is an arithmetic number, because the mean of its divisors is an integer number (16350737634).

Almost surely, 2^212053531555 is an apocalyptic number.

212053531555 is a deficient number, since it is larger than the sum of its proper divisors (49558270589).

212053531555 is a wasteful number, since it uses less digits than its factorization.

212053531555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3734646.

The product of its (nonzero) digits is 112500, while the sum is 37.

Adding to 212053531555 its reverse (555135350212), we get a palindrome (767188881767).

The spelling of 212053531555 in words is "two hundred twelve billion, fifty-three million, five hundred thirty-one thousand, five hundred fifty-five".