213221312200 has 48 divisors (see below), whose sum is σ = 533873368980. Its totient is φ = 78727868160.

The previous prime is 213221312197. The next prime is 213221312219. The reversal of 213221312200 is 2213122312.

It can be written as a sum of positive squares in 6 ways, for example, as 41631505444 + 171589806756 = 204038^2 + 414234^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41001499 + ... + 41006698.

Almost surely, 2^213221312200 is an apocalyptic number.

213221312200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213221312200 is an abundant number, since it is smaller than the sum of its proper divisors (320652056780).

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

213221312200 is a wasteful number, since it uses less digits than its factorization.

213221312200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82008226 (or 82008217 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 213221312200 its reverse (2213122312), we get a palindrome (215434434512).

The spelling of 213221312200 in words is "two hundred thirteen billion, two hundred twenty-one million, three hundred twelve thousand, two hundred".