2111021212200 has 48 divisors (see below), whose sum is σ = 6544165759680. Its totient is φ = 562938989760.

The previous prime is 2111021212193. The next prime is 2111021212217. The reversal of 2111021212200 is 22121201112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2111021212200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1759183744 + ... + 1759184943.

It is an arithmetic number, because the mean of its divisors is an integer number (136336786660).

Almost surely, 2^{2111021212200} is an apocalyptic number.

2111021212200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111021212200 is an abundant number, since it is smaller than the sum of its proper divisors (4433144547480).

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

2111021212200 is a wasteful number, since it uses less digits than its factorization.

2111021212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518368706 (or 3518368697 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2111021212200 its reverse (22121201112), we get a palindrome (2133142413312).

The spelling of 2111021212200 in words is "two trillion, one hundred eleven billion, twenty-one million, two hundred twelve thousand, two hundred".