20101112211 has 8 divisors (see below), whose sum is σ = 27525847504. Its totient is φ = 13038559200.

The previous prime is 20101112201. The next prime is 20101112219. The reversal of 20101112211 is 11221110102.

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

It is not a de Polignac number, because 20101112211 - 2²⁹ = 19564241299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101112219) 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, 90545440 + ... + 90545661.

It is an arithmetic number, because the mean of its divisors is an integer number (3440730938).

Almost surely, 2^20101112211 is an apocalyptic number.

20101112211 is a deficient number, since it is larger than the sum of its proper divisors (7424735293).

20101112211 is a wasteful number, since it uses less digits than its factorization.

20101112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181091141.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20101112211 its reverse (11221110102), we get a palindrome (31322222313).

The spelling of 20101112211 in words is "twenty billion, one hundred one million, one hundred twelve thousand, two hundred eleven".