212000442125 has 8 divisors (see below), whose sum is σ = 264576551928. Its totient is φ = 169600353600.

The previous prime is 212000442119. The next prime is 212000442151. The reversal of 212000442125 is 521244000212.

It can be written as a sum of positive squares in 4 ways, for example, as 16563947401 + 195436494724 = 128701^2 + 442082^2 .

It is not a de Polignac number, because 212000442125 - 2⁸ = 212000441869 is a prime.

It is a super-2 number, since 2×212000442125² (a number of 23 digits) contains 22 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 212000442125.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 848001644 + ... + 848001893.

It is an arithmetic number, because the mean of its divisors is an integer number (33072068991).

Almost surely, 2^212000442125 is an apocalyptic number.

212000442125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212000442125 is a deficient number, since it is larger than the sum of its proper divisors (52576109803).

212000442125 is an equidigital number, since it uses as much as digits as its factorization.

212000442125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696003552 (or 1696003542 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 212000442125 its reverse (521244000212), we get a palindrome (733244442337).

The spelling of 212000442125 in words is "two hundred twelve billion, four hundred forty-two thousand, one hundred twenty-five".