2121000112200 has 48 divisors (see below), whose sum is σ = 6575100349680. Its totient is φ = 565600029760.

The previous prime is 2121000112171. The next prime is 2121000112241. The reversal of 2121000112200 is 22110001212.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 1767499494 + ... + 1767500693.

It is an arithmetic number, because the mean of its divisors is an integer number (136981257285).

Almost surely, 2^{2121000112200} is an apocalyptic number.

2121000112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121000112200 is an abundant number, since it is smaller than the sum of its proper divisors (4454100237480).

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

2121000112200 is a wasteful number, since it uses less digits than its factorization.

2121000112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535000206 (or 3535000197 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2121000112200 its reverse (22110001212), we get a palindrome (2143110113412).

The spelling of 2121000112200 in words is "two trillion, one hundred twenty-one billion, one hundred twelve thousand, two hundred".