12020211320 has 64 divisors (see below), whose sum is σ = 29675509920. Its totient is φ = 4354481664.

The previous prime is 12020211311. The next prime is 12020211331. The reversal of 12020211320 is 2311202021.

It is a happy number.

It is a super-2 number, since 2×12020211320² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12020211295 and 12020211304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190514 + ... + 245633.

Almost surely, 2^12020211320 is an apocalyptic number.

12020211320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020211320 is an abundant number, since it is smaller than the sum of its proper divisors (17655298600).

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

12020211320 is a wasteful number, since it uses less digits than its factorization.

12020211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436224 (or 436220 counting only the distinct ones).

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

Adding to 12020211320 its reverse (2311202021), we get a palindrome (14331413341).

The spelling of 12020211320 in words is "twelve billion, twenty million, two hundred eleven thousand, three hundred twenty".