2111221200000 has 1536 divisors, whose sum is σ = 8096241807360. Its totient is φ = 482816000000.

The previous prime is 2111221199981. The next prime is 2111221200031. The reversal of 2111221200000 is 21221112.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 25436399959 + ... + 25436400041.

It is an arithmetic number, because the mean of its divisors is an integer number (5270990760).

Almost surely, 2^{2111221200000} is an apocalyptic number.

2111221200000 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 2111221200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4048120903680).

2111221200000 is an abundant number, since it is smaller than the sum of its proper divisors (5985020607360).

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

2111221200000 is an equidigital number, since it uses as much as digits as its factorization.

2111221200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2111221200000 its reverse (21221112), we get a palindrome (2111242421112).

The spelling of 2111221200000 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, two hundred thousand".