20110211011120 has 160 divisors (see below), whose sum is σ = 50369036889600. Its totient is φ = 7442398236672.

The previous prime is 20110211011091. The next prime is 20110211011127. The reversal of 20110211011120 is 2111011201102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20110211011120.

It is not an unprimeable number, because it can be changed into a prime (20110211011127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550509016 + ... + 550545544.

It is an arithmetic number, because the mean of its divisors is an integer number (314806480560).

Almost surely, 2^{20110211011120} is an apocalyptic number.

20110211011120 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 20110211011120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25184518444800).

20110211011120 is an abundant number, since it is smaller than the sum of its proper divisors (30258825878480).

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

20110211011120 is a wasteful number, since it uses less digits than its factorization.

20110211011120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45027 (or 45021 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20110211011120 its reverse (2111011201102), we get a palindrome (22221222212222).

The spelling of 20110211011120 in words is "twenty trillion, one hundred ten billion, two hundred eleven million, eleven thousand, one hundred twenty".