213112312200 has 144 divisors (see below), whose sum is σ = 742209839280. Its totient is φ = 56829936960.

The previous prime is 213112312199. The next prime is 213112312211. The reversal of 213112312200 is 2213211312.

213112312200 is a `hidden beast` number, since 21 + 311 + 2 + 312 + 20 + 0 = 666.

It is a super-2 number, since 2×213112312200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2143914 + ... + 2241113.

It is an arithmetic number, because the mean of its divisors is an integer number (5154234995).

Almost surely, 2^213112312200 is an apocalyptic number.

213112312200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213112312200 is an abundant number, since it is smaller than the sum of its proper divisors (529097527080).

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

213112312200 is a wasteful number, since it uses less digits than its factorization.

213112312200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385058 (or 4385037 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 213112312200 its reverse (2213211312), we get a palindrome (215325523512).

The spelling of 213112312200 in words is "two hundred thirteen billion, one hundred twelve million, three hundred twelve thousand, two hundred".