12011201222220 has 144 divisors (see below), whose sum is σ = 39388083702240. Its totient is φ = 2952397651968.

The previous prime is 12011201222191. The next prime is 12011201222263. The reversal of 12011201222220 is 2222210211021.

It is a happy number.

12011201222220 is a `hidden beast` number, since 1 + 20 + 1 + 1 + 201 + 222 + 220 = 666.

12011201222220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12011201222193 and 12011201222202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47333557 + ... + 47586636.

Almost surely, 2^{12011201222220} is an apocalyptic number.

12011201222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011201222220 is an abundant number, since it is smaller than the sum of its proper divisors (27376882480020).

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

12011201222220 is a wasteful number, since it uses less digits than its factorization.

12011201222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94920264 (or 94920259 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12011201222220 its reverse (2222210211021), we get a palindrome (14233411433241).

The spelling of 12011201222220 in words is "twelve trillion, eleven billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty".