212255164441 has 4 divisors (see below), whose sum is σ = 212305573584. Its totient is φ = 212204755300.

The previous prime is 212255164411. The next prime is 212255164447. The reversal of 212255164441 is 144461552212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212255164441 - 2⁵ = 212255164409 is a prime.

It is a super-3 number, since 3×212255164441³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212255164441.

It is not an unprimeable number, because it can be changed into a prime (212255164447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25198255 + ... + 25206676.

It is an arithmetic number, because the mean of its divisors is an integer number (53076393396).

Almost surely, 2^212255164441 is an apocalyptic number.

It is an amenable number.

212255164441 is a deficient number, since it is larger than the sum of its proper divisors (50409143).

212255164441 is an equidigital number, since it uses as much as digits as its factorization.

212255164441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50409142.

The product of its digits is 76800, while the sum is 37.

The spelling of 212255164441 in words is "two hundred twelve billion, two hundred fifty-five million, one hundred sixty-four thousand, four hundred forty-one".