1101020211018 has 128 divisors (see below), whose sum is σ = 3013098278400. Its totient is φ = 290209153536.

The previous prime is 1101020210999. The next prime is 1101020211019. The reversal of 1101020211018 is 8101120201011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1101020211019) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8451318 + ... + 8580606.

It is an arithmetic number, because the mean of its divisors is an integer number (23539830300).

Almost surely, 2^{1101020211018} is an apocalyptic number.

1101020211018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1101020211018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1506549139200).

1101020211018 is an abundant number, since it is smaller than the sum of its proper divisors (1912078067382).

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

1101020211018 is a wasteful number, since it uses less digits than its factorization.

1101020211018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131053 (or 131047 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 1101020211018 its reverse (8101120201011), we get a palindrome (9202140412029).

The spelling of 1101020211018 in words is "one trillion, one hundred one billion, twenty million, two hundred eleven thousand, eighteen".