212500004000 has 48 divisors (see below), whose sum is σ = 522112519656. Its totient is φ = 85000000000.

The previous prime is 212500003993. The next prime is 212500004011. The reversal of 212500004000 is 400005212.

It can be written as a sum of positive squares in 4 ways, for example, as 34223520016 + 178276483984 = 184996^2 + 422228^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26558501 + ... + 26566500.

Almost surely, 2^212500004000 is an apocalyptic number.

212500004000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212500004000 is an abundant number, since it is smaller than the sum of its proper divisors (309612515656).

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

212500004000 is an equidigital number, since it uses as much as digits as its factorization.

212500004000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53125026 (or 53125008 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

Adding to 212500004000 its reverse (400005212), we get a palindrome (212900009212).

The spelling of 212500004000 in words is "two hundred twelve billion, five hundred million, four thousand".