2221112121200 has 90 divisors (see below), whose sum is σ = 6207441823296. Its totient is φ = 761524149120.

The previous prime is 2221112121187. The next prime is 2221112121203. The reversal of 2221112121200 is 21212111222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221112121203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 56641424 + ... + 56680623.

Almost surely, 2^{2221112121200} is an apocalyptic number.

2221112121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221112121200 is an abundant number, since it is smaller than the sum of its proper divisors (3986329702096).

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

2221112121200 is a wasteful number, since it uses less digits than its factorization.

2221112121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113322079 (or 113322061 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2221112121200 its reverse (21212111222), we get a palindrome (2242324232422).

The spelling of 2221112121200 in words is "two trillion, two hundred twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, two hundred".