2221100120000 has 140 divisors (see below), whose sum is σ = 5509739456496. Its totient is φ = 888096000000.

The previous prime is 2221100119969. The next prime is 2221100120011. The reversal of 2221100120000 is 210011222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 120030749 + ... + 120049251.

Almost surely, 2^{2221100120000} is an apocalyptic number.

2221100120000 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 2221100120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2754869728248).

2221100120000 is an abundant number, since it is smaller than the sum of its proper divisors (3288639336496).

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

2221100120000 is an equidigital number, since it uses as much as digits as its factorization.

2221100120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21536 (or 21511 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2221100120000 its reverse (210011222), we get a palindrome (2221310131222).

The spelling of 2221100120000 in words is "two trillion, two hundred twenty-one billion, one hundred million, one hundred twenty thousand".