10120217111 has 2 divisors, whose sum is σ = 10120217112. Its totient is φ = 10120217110.

The previous prime is 10120217071. The next prime is 10120217131. The reversal of 10120217111 is 11171202101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10120217111 - 2⁶ = 10120217047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10120217111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10120217131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060108555 + 5060108556.

It is an arithmetic number, because the mean of its divisors is an integer number (5060108556).

Almost surely, 2^10120217111 is an apocalyptic number.

10120217111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10120217111 is an equidigital number, since it uses as much as digits as its factorization.

10120217111 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 17.

Adding to 10120217111 its reverse (11171202101), we get a palindrome (21291419212).

The spelling of 10120217111 in words is "ten billion, one hundred twenty million, two hundred seventeen thousand, one hundred eleven".