2121200112200 has 96 divisors (see below), whose sum is σ = 5311734897000. Its totient is φ = 783127388160.

The previous prime is 2121200112197. The next prime is 2121200112221. The reversal of 2121200112200 is 22110021212.

It can be written as a sum of positive squares in 12 ways, for example, as 115028148964 + 2006171963236 = 339158^2 + 1416394^2 .

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, 27138776 + ... + 27216824.

Almost surely, 2^{2121200112200} is an apocalyptic number.

2121200112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121200112200 is an abundant number, since it is smaller than the sum of its proper divisors (3190534784800).

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

2121200112200 is a wasteful number, since it uses less digits than its factorization.

2121200112200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88531 (or 88522 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2121200112200 its reverse (22110021212), we get a palindrome (2143310133412).

The spelling of 2121200112200 in words is "two trillion, one hundred twenty-one billion, two hundred million, one hundred twelve thousand, two hundred".