12011210100020 has 24 divisors (see below), whose sum is σ = 25331796761544. Its totient is φ = 4783863934976.

The previous prime is 12011210099971. The next prime is 12011210100073. The reversal of 12011210100020 is 2000101211021.

It can be written as a sum of positive squares in 4 ways, for example, as 343288184464 + 11667921915556 = 585908^2 + 3415834^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12011210099974 and 12011210100010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1288751789 + ... + 1288761108.

It is an arithmetic number, because the mean of its divisors is an integer number (1055491531731).

Almost surely, 2^{12011210100020} is an apocalyptic number.

12011210100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011210100020 is an abundant number, since it is smaller than the sum of its proper divisors (13320586661524).

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

12011210100020 is a wasteful number, since it uses less digits than its factorization.

12011210100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577513139 (or 2577513137 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12011210100020 its reverse (2000101211021), we get a palindrome (14011311311041).

The spelling of 12011210100020 in words is "twelve trillion, eleven billion, two hundred ten million, one hundred thousand, twenty".