11011102020 has 144 divisors (see below), whose sum is σ = 34324722432. Its totient is φ = 2855623680.

The previous prime is 11011102019. The next prime is 11011102021. The reversal of 11011102020 is 2020111011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11011102019) and next prime (11011102021).

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 = 11011101993 and 11011102011.

It is not an unprimeable number, because it can be changed into a prime (11011102021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1862389 + ... + 1868291.

It is an arithmetic number, because the mean of its divisors is an integer number (238366128).

Almost surely, 2^11011102020 is an apocalyptic number.

11011102020 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 11011102020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17162361216).

11011102020 is an abundant number, since it is smaller than the sum of its proper divisors (23313620412).

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

11011102020 is a wasteful number, since it uses less digits than its factorization.

11011102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202 (or 6197 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11011102020 its reverse (2020111011), we get a palindrome (13031213031).

The spelling of 11011102020 in words is "eleven billion, eleven million, one hundred two thousand, twenty".