20031211200000 has 2880 divisors, whose sum is σ = 90473444328960. Its totient is φ = 3832012800000.

The previous prime is 20031211199971. The next prime is 20031211200109. The reversal of 20031211200000 is 211213002.

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 287 ways as a sum of consecutive naturals, for example, 52852799811 + ... + 52852800189.

It is an arithmetic number, because the mean of its divisors is an integer number (31414390392).

Almost surely, 2^{20031211200000} is an apocalyptic number.

20031211200000 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 20031211200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45236722164480).

20031211200000 is an abundant number, since it is smaller than the sum of its proper divisors (70442233128960).

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

20031211200000 is an equidigital number, since it uses as much as digits as its factorization.

20031211200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20031211200000 its reverse (211213002), we get a palindrome (20031422413002).

The spelling of 20031211200000 in words is "twenty trillion, thirty-one billion, two hundred eleven million, two hundred thousand".