20112111300000 has 576 divisors, whose sum is σ = 67853650088448. Its totient is φ = 5212646400000.

The previous prime is 20112111299999. The next prime is 20112111300011. The reversal of 20112111300000 is 311121102.

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 95 ways as a sum of consecutive naturals, for example, 3407097049 + ... + 3407102951.

It is an arithmetic number, because the mean of its divisors is an integer number (117801475848).

Almost surely, 2^{20112111300000} is an apocalyptic number.

20112111300000 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 20112111300000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33926825044224).

20112111300000 is an abundant number, since it is smaller than the sum of its proper divisors (47741538788448).

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

20112111300000 is an equidigital number, since it uses as much as digits as its factorization.

20112111300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6259 (or 6231 counting only the distinct ones).

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

Adding to 20112111300000 its reverse (311121102), we get a palindrome (20112422421102).

The spelling of 20112111300000 in words is "twenty trillion, one hundred twelve billion, one hundred eleven million, three hundred thousand".