20111210011011 has 16 divisors (see below), whose sum is σ = 30669994656000. Its totient is φ = 11482992016608.

The previous prime is 20111210010949. The next prime is 20111210011091. The reversal of 20111210011011 is 11011001211102.

It is not a de Polignac number, because 20111210011011 - 2⁹ = 20111210010499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111210011091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380305836 + ... + 380358713.

It is an arithmetic number, because the mean of its divisors is an integer number (1916874666000).

Almost surely, 2^{20111210011011} is an apocalyptic number.

20111210011011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20111210011011 is a deficient number, since it is larger than the sum of its proper divisors (10558784644989).

20111210011011 is a wasteful number, since it uses less digits than its factorization.

20111210011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760665818.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 20111210011011 its reverse (11011001211102), we get a palindrome (31122211222113).

The spelling of 20111210011011 in words is "twenty trillion, one hundred eleven billion, two hundred ten million, eleven thousand, eleven".