1101020111100 has 1296 divisors, whose sum is σ = 4620250951680. Its totient is φ = 213983078400.

The previous prime is 1101020111089. The next prime is 1101020111101. The reversal of 1101020111100 is 11110201011.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101020111101) by changing a digit.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 748483365 + ... + 748484835.

Almost surely, 2^{1101020111100} is an apocalyptic number.

1101020111100 is a gapful number since it is divisible by the number (10) 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 1101020111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2310125475840).

1101020111100 is an abundant number, since it is smaller than the sum of its proper divisors (3519230840580).

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

1101020111100 is a wasteful number, since it uses less digits than its factorization.

1101020111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1101020111100 its reverse (11110201011), we get a palindrome (1112130312111).

The spelling of 1101020111100 in words is "one trillion, one hundred one billion, twenty million, one hundred eleven thousand, one hundred".