20011211111107 has 2 divisors, whose sum is σ = 20011211111108. Its totient is φ = 20011211111106.

The previous prime is 20011211111093. The next prime is 20011211111123. The reversal of 20011211111107 is 70111111211002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20011211111107 - 2¹¹ = 20011211109059 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011251111107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005605555553 + 10005605555554.

It is an arithmetic number, because the mean of its divisors is an integer number (10005605555554).

Almost surely, 2^{20011211111107} is an apocalyptic number.

20011211111107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011211111107 is an equidigital number, since it uses as much as digits as its factorization.

20011211111107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28, while the sum is 19.

Adding to 20011211111107 its reverse (70111111211002), we get a palindrome (90122322322109).

The spelling of 20011211111107 in words is "twenty trillion, eleven billion, two hundred eleven million, one hundred eleven thousand, one hundred seven".