20111112101211 has 64 divisors (see below), whose sum is σ = 27979264051200. Its totient is φ = 12838250151936.

The previous prime is 20111112101147. The next prime is 20111112101261. The reversal of 20111112101211 is 11210121111102.

It is not a de Polignac number, because 20111112101211 - 2⁶ = 20111112101147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111112101261) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2332259646 + ... + 2332268268.

It is an arithmetic number, because the mean of its divisors is an integer number (437176000800).

Almost surely, 2^{20111112101211} is an apocalyptic number.

20111112101211 is a deficient number, since it is larger than the sum of its proper divisors (7868151949989).

20111112101211 is a wasteful number, since it uses less digits than its factorization.

20111112101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9828.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 20111112101211 its reverse (11210121111102), we get a palindrome (31321233212313).

The spelling of 20111112101211 in words is "twenty trillion, one hundred eleven billion, one hundred twelve million, one hundred one thousand, two hundred eleven".