212445323544212 has 36 divisors (see below), whose sum is σ = 408712207164660. Its totient is φ = 96551354444160.

The previous prime is 212445323544193. The next prime is 212445323544217.

212445323544212 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 104525554803076 + 107919768741136 = 10223774^2 + 10388444^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212445323544217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30230303 + ... + 36589094.

It is an arithmetic number, because the mean of its divisors is an integer number (11353116865685).

Almost surely, 2^{212445323544212} is an apocalyptic number.

212445323544212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212445323544212 is a deficient number, since it is larger than the sum of its proper divisors (196266883620448).

212445323544212 is a wasteful number, since it uses less digits than its factorization.

212445323544212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66825992 (or 66825979 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 44.

The spelling of 212445323544212 in words is "two hundred twelve trillion, four hundred forty-five billion, three hundred twenty-three million, five hundred forty-four thousand, two hundred twelve".