2200121100000 has 432 divisors, whose sum is σ = 7830418508640. Its totient is φ = 585936000000.

The previous prime is 2200121099999. The next prime is 2200121100007. The reversal of 2200121100000 is 11210022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200121100007) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1170899061 + ... + 1170900939.

It is an arithmetic number, because the mean of its divisors is an integer number (18125968770).

Almost surely, 2^{2200121100000} is an apocalyptic number.

2200121100000 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 2200121100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3915209254320).

2200121100000 is an abundant number, since it is smaller than the sum of its proper divisors (5630297408640).

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

2200121100000 is a wasteful number, since it uses less digits than its factorization.

2200121100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221 (or 3190 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2200121100000 its reverse (11210022), we get a palindrome (2200132310022).

The spelling of 2200121100000 in words is "two trillion, two hundred billion, one hundred twenty-one million, one hundred thousand".