2211120121200 has 60 divisors (see below), whose sum is σ = 7082954792088. Its totient is φ = 589632032000.

The previous prime is 2211120121163. The next prime is 2211120121201. The reversal of 2211120121200 is 21210211122.

It is a tau number, because it is divible by the number of its divisors (60).

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 2211120121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211120121201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 921298851 + ... + 921301250.

Almost surely, 2^{2211120121200} is an apocalyptic number.

2211120121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211120121200 is an abundant number, since it is smaller than the sum of its proper divisors (4871834670888).

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

2211120121200 is a wasteful number, since it uses less digits than its factorization.

2211120121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842600122 (or 1842600111 counting only the distinct ones).

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

Adding to 2211120121200 its reverse (21210211122), we get a palindrome (2232330332322).

The spelling of 2211120121200 in words is "two trillion, two hundred eleven billion, one hundred twenty million, one hundred twenty-one thousand, two hundred".