212552031445 has 16 divisors (see below), whose sum is σ = 274725747072. Its totient is φ = 156936859200.

The previous prime is 212552031443. The next prime is 212552031473. The reversal of 212552031445 is 544130255212.

It is a happy number.

It is not a de Polignac number, because 212552031445 - 2¹ = 212552031443 is a prime.

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 212552031445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212552031443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165864 + ... + 672766.

It is an arithmetic number, because the mean of its divisors is an integer number (17170359192).

Almost surely, 2^212552031445 is an apocalyptic number.

It is an amenable number.

212552031445 is a deficient number, since it is larger than the sum of its proper divisors (62173715627).

212552031445 is a wasteful number, since it uses less digits than its factorization.

212552031445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513372.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 212552031445 its reverse (544130255212), we get a palindrome (756682286657).

The spelling of 212552031445 in words is "two hundred twelve billion, five hundred fifty-two million, thirty-one thousand, four hundred forty-five".