20011211100211 has 8 divisors (see below), whose sum is σ = 20218619484560. Its totient is φ = 19803825312768.

The previous prime is 20011211100187. The next prime is 20011211100253. The reversal of 20011211100211 is 11200111211002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20011211100211 - 2²³ = 20011202711603 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20011211100191 and 20011211100200.

It is not an unprimeable number, because it can be changed into a prime (20011211100271) 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, 3866001 + ... + 7414066.

It is an arithmetic number, because the mean of its divisors is an integer number (2527327435570).

Almost surely, 2^{20011211100211} is an apocalyptic number.

20011211100211 is a deficient number, since it is larger than the sum of its proper divisors (207408384349).

20011211100211 is a wasteful number, since it uses less digits than its factorization.

20011211100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11298453.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20011211100211 its reverse (11200111211002), we get a palindrome (31211322311213).

The spelling of 20011211100211 in words is "twenty trillion, eleven billion, two hundred eleven million, one hundred thousand, two hundred eleven".