12011223020 has 24 divisors (see below), whose sum is σ = 25288426800. Its totient is φ = 4792135232.

The previous prime is 12011222999. The next prime is 12011223023. The reversal of 12011223020 is 2032211021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12011222986 and 12011223004.

It is not an unprimeable number, because it can be changed into a prime (12011223023) 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, 764150 + ... + 779709.

It is an arithmetic number, because the mean of its divisors is an integer number (1053684450).

Almost surely, 2^12011223020 is an apocalyptic number.

12011223020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011223020 is an abundant number, since it is smaller than the sum of its proper divisors (13277203780).

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

12011223020 is a wasteful number, since it uses less digits than its factorization.

12011223020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544257 (or 1544255 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12011223020 its reverse (2032211021), we get a palindrome (14043434041).

It can be divided in two parts, 1201 and 1223020, that added together give a palindrome (1224221).

The spelling of 12011223020 in words is "twelve billion, eleven million, two hundred twenty-three thousand, twenty".