11011011020 has 12 divisors (see below), whose sum is σ = 23123123184. Its totient is φ = 4404404400.

The previous prime is 11011011017. The next prime is 11011011023. The reversal of 11011011020 is 2011011011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11011011017) and next prime (11011011023).

It is a super-2 number, since 2×11011011020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11011010989 and 11011011007.

It is not an unprimeable number, because it can be changed into a prime (11011011023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275275256 + ... + 275275295.

It is an arithmetic number, because the mean of its divisors is an integer number (1926926932).

Almost surely, 2^11011011020 is an apocalyptic number.

11011011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011011020 is an abundant number, since it is smaller than the sum of its proper divisors (12112112164).

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

11011011020 is a wasteful number, since it uses less digits than its factorization.

11011011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550550560 (or 550550558 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11011011020 its reverse (2011011011), we get a palindrome (13022022031).

Subtracting from 11011011020 its reverse (2011011011), we obtain a palindrome (9000000009).

The spelling of 11011011020 in words is "eleven billion, eleven million, eleven thousand, twenty".