12020011320 has 32 divisors (see below), whose sum is σ = 36060034320. Its totient is φ = 3205336320.

The previous prime is 12020011307. The next prime is 12020011343. The reversal of 12020011320 is 2311002021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12020011296 and 12020011305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50083261 + ... + 50083500.

Almost surely, 2^12020011320 is an apocalyptic number.

12020011320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020011320 is an abundant number, since it is smaller than the sum of its proper divisors (24040023000).

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

12020011320 is a wasteful number, since it uses less digits than its factorization.

12020011320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100166775 (or 100166771 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12020011320 its reverse (2311002021), we get a palindrome (14331013341).

The spelling of 12020011320 in words is "twelve billion, twenty million, eleven thousand, three hundred twenty".