2121220200200 has 48 divisors (see below), whose sum is σ = 4980667081860. Its totient is φ = 840087200000.

The previous prime is 2121220200167. The next prime is 2121220200251. The reversal of 2121220200200 is 20020221212.

It can be written as a sum of positive squares in 6 ways, for example, as 1856030219044 + 265189981156 = 1362362^2 + 514966^2 .

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, 52485251 + ... + 52525650.

Almost surely, 2^{2121220200200} is an apocalyptic number.

2121220200200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121220200200 is an abundant number, since it is smaller than the sum of its proper divisors (2859446881660).

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

2121220200200 is a wasteful number, since it uses less digits than its factorization.

2121220200200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105011018 (or 105011009 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2121220200200 its reverse (20020221212), we get a palindrome (2141240421412).

The spelling of 2121220200200 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, two hundred".