212205342255 has 32 divisors (see below), whose sum is σ = 359803200960. Its totient is φ = 106608337920.

The previous prime is 212205342241. The next prime is 212205342257. The reversal of 212205342255 is 552243502212.

212205342255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-212205342255 is a prime.

It is a super-2 number, since 2×212205342255² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212205342257) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 5931292 + ... + 5966961.

It is an arithmetic number, because the mean of its divisors is an integer number (11243850030).

Almost surely, 2^212205342255 is an apocalyptic number.

212205342255 is a deficient number, since it is larger than the sum of its proper divisors (147597858705).

212205342255 is a wasteful number, since it uses less digits than its factorization.

212205342255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11898331.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 212205342255 its reverse (552243502212), we get a palindrome (764448844467).

The spelling of 212205342255 in words is "two hundred twelve billion, two hundred five million, three hundred forty-two thousand, two hundred fifty-five".