212543345228 has 24 divisors (see below), whose sum is σ = 375504815952. Its totient is φ = 105256666944.

The previous prime is 212543345227. The next prime is 212543345237. The reversal of 212543345228 is 822543345212.

It is not an unprimeable number, because it can be changed into a prime (212543345227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2124050 + ... + 2221862.

It is an arithmetic number, because the mean of its divisors is an integer number (15646033998).

Almost surely, 2^212543345228 is an apocalyptic number.

It is an amenable number.

212543345228 is a deficient number, since it is larger than the sum of its proper divisors (162961470724).

212543345228 is a wasteful number, since it uses less digits than its factorization.

212543345228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103001 (or 102999 counting only the distinct ones).

The product of its digits is 460800, while the sum is 41.

The spelling of 212543345228 in words is "two hundred twelve billion, five hundred forty-three million, three hundred forty-five thousand, two hundred twenty-eight".