20010910111 has 2 divisors, whose sum is σ = 20010910112. Its totient is φ = 20010910110.

The previous prime is 20010910097. The next prime is 20010910151. The reversal of 20010910111 is 11101901002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010910111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010910151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005455055 + 10005455056.

It is an arithmetic number, because the mean of its divisors is an integer number (10005455056).

Almost surely, 2^20010910111 is an apocalyptic number.

20010910111 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010910111 is an equidigital number, since it uses as much as digits as its factorization.

20010910111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 16.

The spelling of 20010910111 in words is "twenty billion, ten million, nine hundred ten thousand, one hundred eleven".