2120111011200 has 1536 divisors, whose sum is σ = 8923918832640. Its totient is φ = 430459453440.

The previous prime is 2120111011177. The next prime is 2120111011201. The reversal of 2120111011200 is 21101110212.

It is a super-2 number, since 2×2120111011200² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120111011201) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3458582094 + ... + 3458582706.

It is an arithmetic number, because the mean of its divisors is an integer number (5809842990).

Almost surely, 2^{2120111011200} is an apocalyptic number.

2120111011200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120111011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4461959416320).

2120111011200 is an abundant number, since it is smaller than the sum of its proper divisors (6803807821440).

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

2120111011200 is a wasteful number, since it uses less digits than its factorization.

2120111011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804 (or 787 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2120111011200 its reverse (21101110212), we get a palindrome (2141212121412).

The spelling of 2120111011200 in words is "two trillion, one hundred twenty billion, one hundred eleven million, eleven thousand, two hundred".