1101111123210 has 128 divisors (see below), whose sum is σ = 3083922906624. Its totient is φ = 246392340480.

The previous prime is 1101111123193. The next prime is 1101111123221. The reversal of 1101111123210 is 123211111011.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1101111123210.

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, 4978170 + ... + 5194650.

It is an arithmetic number, because the mean of its divisors is an integer number (24093147708).

Almost surely, 2^{1101111123210} is an apocalyptic number.

1101111123210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101111123210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1541961453312).

1101111123210 is an abundant number, since it is smaller than the sum of its proper divisors (1982811783414).

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

1101111123210 is a wasteful number, since it uses less digits than its factorization.

1101111123210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217008.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 1101111123210 its reverse (123211111011), we get a palindrome (1224322234221).

It can be divided in two parts, 110111 and 1123210, that added together give a palindrome (1233321).

The spelling of 1101111123210 in words is "one trillion, one hundred one billion, one hundred eleven million, one hundred twenty-three thousand, two hundred ten".