212445545544212 has 24 divisors (see below), whose sum is σ = 375461900161992. Its totient is φ = 105170723696000.

The previous prime is 212445545544179. The next prime is 212445545544217.

212445545544212 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 45620784627856 + 166824760916356 = 6754316^2 + 12916066^2 .

It is a super-3 number, since 3×212445545544212³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212445545544217) 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 7 ways as a sum of consecutive naturals, for example, 165055898 + ... + 166338030.

It is an arithmetic number, because the mean of its divisors is an integer number (15644245840083).

Almost surely, 2^{212445545544212} is an apocalyptic number.

It is an amenable number.

212445545544212 is a deficient number, since it is larger than the sum of its proper divisors (163016354617780).

212445545544212 is a wasteful number, since it uses less digits than its factorization.

212445545544212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692379 (or 1692377 counting only the distinct ones).

The product of its digits is 10240000, while the sum is 50.

The spelling of 212445545544212 in words is "two hundred twelve trillion, four hundred forty-five billion, five hundred forty-five million, five hundred forty-four thousand, two hundred twelve".