12111220002020 has 24 divisors (see below), whose sum is σ = 25434014901624. Its totient is φ = 4844401734656.

The previous prime is 12111220002001. The next prime is 12111220002043. The reversal of 12111220002020 is 2020002211121.

It can be written as a sum of positive squares in 4 ways, for example, as 1674353185024 + 10436866816996 = 1293968^2 + 3230614^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12111220001986 and 12111220002004.

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, 4234349 + ... + 6492468.

It is an arithmetic number, because the mean of its divisors is an integer number (1059750620901).

Almost surely, 2^{12111220002020} is an apocalyptic number.

12111220002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111220002020 is an abundant number, since it is smaller than the sum of its proper divisors (13322794899604).

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

12111220002020 is a wasteful number, since it uses less digits than its factorization.

12111220002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10783279 (or 10783277 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12111220002020 its reverse (2020002211121), we get a palindrome (14131222213141).

The spelling of 12111220002020 in words is "twelve trillion, one hundred eleven billion, two hundred twenty million, two thousand, twenty".