11011230020 has 72 divisors (see below), whose sum is σ = 26994590784. Its totient is φ = 3761843904.

The previous prime is 11011229993. The next prime is 11011230047. The reversal of 11011230020 is 2003211011.

It is an interprime number because it is at equal distance from previous prime (11011229993) and next prime (11011230047).

It is a junction number, because it is equal to n+sod(n) for n = 11011229983 and 11011230010.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257489 + ... + 297191.

It is an arithmetic number, because the mean of its divisors is an integer number (374924872).

Almost surely, 2^11011230020 is an apocalyptic number.

11011230020 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 11011230020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13497295392).

11011230020 is an abundant number, since it is smaller than the sum of its proper divisors (15983360764).

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

11011230020 is a wasteful number, since it uses less digits than its factorization.

11011230020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40009 (or 40000 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 11011230020 its reverse (2003211011), we get a palindrome (13014441031).

The spelling of 11011230020 in words is "eleven billion, eleven million, two hundred thirty thousand, twenty".