20100111011 has 2 divisors, whose sum is σ = 20100111012. Its totient is φ = 20100111010.

The previous prime is 20100110923. The next prime is 20100111013. The reversal of 20100111011 is 11011100102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20100111011 - 2¹⁴ = 20100094627 is a prime.

Together with 20100111013, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20100111011.

It is not a weakly prime, because it can be changed into another prime (20100111013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050055505 + 10050055506.

It is an arithmetic number, because the mean of its divisors is an integer number (10050055506).

Almost surely, 2^20100111011 is an apocalyptic number.

20100111011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100111011 is an equidigital number, since it uses as much as digits as its factorization.

20100111011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 20100111011 its reverse (11011100102), we get a palindrome (31111211113).

The spelling of 20100111011 in words is "twenty billion, one hundred million, one hundred eleven thousand, eleven".