12011302100220 has 96 divisors (see below), whose sum is σ = 33879213204480. Its totient is φ = 3179483953920.

The previous prime is 12011302100173. The next prime is 12011302100407. The reversal of 12011302100220 is 2200120311021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12011302100220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7281421 + ... + 8777339.

It is an arithmetic number, because the mean of its divisors is an integer number (352908470880).

Almost surely, 2^{12011302100220} is an apocalyptic number.

12011302100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011302100220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16939606602240).

12011302100220 is an abundant number, since it is smaller than the sum of its proper divisors (21867911104260).

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

12011302100220 is a wasteful number, since it uses less digits than its factorization.

12011302100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496915 (or 1496913 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12011302100220 its reverse (2200120311021), we get a palindrome (14211422411241).

The spelling of 12011302100220 in words is "twelve trillion, eleven billion, three hundred two million, one hundred thousand, two hundred twenty".