20121200011 has 8 divisors (see below), whose sum is σ = 22197034800. Its totient is φ = 18086471040.

The previous prime is 20121199997. The next prime is 20121200053. The reversal of 20121200011 is 11000212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20121200011 - 2⁵ = 20121199979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121200111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10275426 + ... + 10277383.

It is an arithmetic number, because the mean of its divisors is an integer number (2774629350).

Almost surely, 2^20121200011 is an apocalyptic number.

20121200011 is a deficient number, since it is larger than the sum of its proper divisors (2075834789).

20121200011 is a wasteful number, since it uses less digits than its factorization.

20121200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20552909.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20121200011 its reverse (11000212102), we get a palindrome (31121412113).

It can be divided in two parts, 201 and 21200011, that added together give a palindrome (21200212).

The spelling of 20121200011 in words is "twenty billion, one hundred twenty-one million, two hundred thousand, eleven".