20102211111000 has 256 divisors, whose sum is σ = 64503848448000. Its totient is φ = 5208434035200.

The previous prime is 20102211110939. The next prime is 20102211111011. The reversal of 20102211111000 is 11111220102.

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 63 ways as a sum of consecutive naturals, for example, 79683061 + ... + 79934939.

It is an arithmetic number, because the mean of its divisors is an integer number (251968158000).

Almost surely, 2^{20102211111000} is an apocalyptic number.

20102211111000 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 20102211111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32251924224000).

20102211111000 is an abundant number, since it is smaller than the sum of its proper divisors (44401637337000).

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

20102211111000 is a wasteful number, since it uses less digits than its factorization.

20102211111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252659 (or 252645 counting only the distinct ones).

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

Adding to 20102211111000 its reverse (11111220102), we get a palindrome (20113322331102).

The spelling of 20102211111000 in words is "twenty trillion, one hundred two billion, two hundred eleven million, one hundred eleven thousand".