1101220000020 has 288 divisors, whose sum is σ = 4079217542400. Its totient is φ = 234727206912.

The previous prime is 1101219999961. The next prime is 1101220000081. The reversal of 1101220000020 is 200000221011.

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

It is a junction number, because it is equal to n+sod(n) for n = 1101219999957 and 1101220000011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2098951 + ... + 2570609.

It is an arithmetic number, because the mean of its divisors is an integer number (14163949800).

Almost surely, 2^{1101220000020} is an apocalyptic number.

1101220000020 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 1101220000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2039608771200).

1101220000020 is an abundant number, since it is smaller than the sum of its proper divisors (2977997542380).

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

1101220000020 is a wasteful number, since it uses less digits than its factorization.

1101220000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471807 (or 471802 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1101220000020 its reverse (200000221011), we get a palindrome (1301220221031).

The spelling of 1101220000020 in words is "one trillion, one hundred one billion, two hundred twenty million, twenty", and thus it is an aban number.