10101988111 has 2 divisors, whose sum is σ = 10101988112. Its totient is φ = 10101988110.

The previous prime is 10101988087. The next prime is 10101988123. The reversal of 10101988111 is 11188910101.

It is a strong prime.

It is an emirp because it is prime and its reverse (11188910101) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 11188610101 and 10101688111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10101988111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101985111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050994055 + 5050994056.

It is an arithmetic number, because the mean of its divisors is an integer number (5050994056).

Almost surely, 2^10101988111 is an apocalyptic number.

10101988111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101988111 is an equidigital number, since it uses as much as digits as its factorization.

10101988111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 31.

The spelling of 10101988111 in words is "ten billion, one hundred one million, nine hundred eighty-eight thousand, one hundred eleven".