212255445512 has 64 divisors (see below), whose sum is σ = 436340520000. Its totient is φ = 95996067840.

The previous prime is 212255445499. The next prime is 212255445517. The reversal of 212255445512 is 215544552212.

It is not an unprimeable number, because it can be changed into a prime (212255445517) 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, 16013864 + ... + 16027112.

It is an arithmetic number, because the mean of its divisors is an integer number (6817820625).

Almost surely, 2^212255445512 is an apocalyptic number.

212255445512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212255445512 is an abundant number, since it is smaller than the sum of its proper divisors (224085074488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212255445512 is a wasteful number, since it uses less digits than its factorization.

212255445512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14166 (or 14162 counting only the distinct ones).

The product of its digits is 160000, while the sum is 38.

Adding to 212255445512 its reverse (215544552212), we get a palindrome (427799997724).

The spelling of 212255445512 in words is "two hundred twelve billion, two hundred fifty-five million, four hundred forty-five thousand, five hundred twelve".