11231112020 has 24 divisors (see below), whose sum is σ = 23828487144. Its totient is φ = 4446130176.

The previous prime is 11231112019. The next prime is 11231112023. The reversal of 11231112020 is 2021113211.

It can be written as a sum of positive squares in 4 ways, for example, as 9523396 + 11221588624 = 3086^2 + 105932^2 .

It is a super-2 number, since 2×11231112020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11231111986 and 11231112004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231112023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2892677 + ... + 2896556.

It is an arithmetic number, because the mean of its divisors is an integer number (992853631).

Almost surely, 2^11231112020 is an apocalyptic number.

11231112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231112020 is an abundant number, since it is smaller than the sum of its proper divisors (12597375124).

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

11231112020 is a wasteful number, since it uses less digits than its factorization.

11231112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5789339 (or 5789337 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11231112020 its reverse (2021113211), we get a palindrome (13252225231).

The spelling of 11231112020 in words is "eleven billion, two hundred thirty-one million, one hundred twelve thousand, twenty".