212499180800 has 54 divisors (see below), whose sum is σ = 525968691318. Its totient is φ = 84999669760.

The previous prime is 212499180799. The next prime is 212499180827. The reversal of 212499180800 is 8081994212.

It can be written as a sum of positive squares in 3 ways, for example, as 486820096 + 212012360704 = 22064^2 + 460448^2 .

It is a super-4 number, since 4×212499180800⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16595099 + ... + 16607898.

Almost surely, 2^212499180800 is an apocalyptic number.

212499180800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212499180800 is an abundant number, since it is smaller than the sum of its proper divisors (313469510518).

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

212499180800 is an equidigital number, since it uses as much as digits as its factorization.

212499180800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33203023 (or 33203004 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 212499180800 in words is "two hundred twelve billion, four hundred ninety-nine million, one hundred eighty thousand, eight hundred".