212896861800 has 96 divisors (see below), whose sum is σ = 754263182400.
Its totient is φ = 48662138880.
The previous prime is 212896861799. The next prime is 212896861817. The reversal of 212896861800 is 8168698212.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25340665 + ... + 25349064.
It is an arithmetic number, because the mean of its divisors is an integer number (7856908150).
Almost surely, 2212896861800 is an apocalyptic number.
212896861800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
212896861800 is an abundant number, since it is smaller than the sum of its proper divisors (541366320600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
212896861800 is a wasteful number, since it uses less digits than its factorization.
212896861800 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 50689755 (or 50689746 counting only the distinct ones).
The product of its (nonzero) digits is 663552, while the sum is 51.
The spelling of 212896861800 in words is "two hundred twelve billion, eight hundred ninety-six million, eight hundred sixty-one thousand, eight hundred".