20211201111000 has 256 divisors, whose sum is σ = 66914475788160. Its totient is φ = 5061509529600.

The previous prime is 20211201110879. The next prime is 20211201111041. The reversal of 20211201111000 is 11110211202.

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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22873414 + ... + 23740586.

Almost surely, 2^{20211201111000} is an apocalyptic number.

20211201111000 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 20211201111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33457237894080).

20211201111000 is an abundant number, since it is smaller than the sum of its proper divisors (46703274677160).

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

20211201111000 is a wasteful number, since it uses less digits than its factorization.

20211201111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867671 (or 867657 counting only the distinct ones).

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

Adding to 20211201111000 its reverse (11110211202), we get a palindrome (20222311322202).

The spelling of 20211201111000 in words is "twenty trillion, two hundred eleven billion, two hundred one million, one hundred eleven thousand".