201111121200000 has 384 divisors, whose sum is σ = 728409902532480. Its totient is φ = 48754208000000.

The previous prime is 201111121199999. The next prime is 201111121200019. The reversal of 201111121200000 is 2121111102.

It is a tau number, because it is divible by the number of its divisors (384).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5582155 + ... + 20817845.

It is an arithmetic number, because the mean of its divisors is an integer number (1896900787845).

Almost surely, 2^{201111121200000} is an apocalyptic number.

201111121200000 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 201111121200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364204951266240).

201111121200000 is an abundant number, since it is smaller than the sum of its proper divisors (527298781332480).

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

201111121200000 is an equidigital number, since it uses as much as digits as its factorization.

201111121200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15235744 (or 15235712 counting only the distinct ones).

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

Adding to 201111121200000 its reverse (2121111102), we get a palindrome (201113242311102).

The spelling of 201111121200000 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred thousand".