10101220111 has 2 divisors, whose sum is σ = 10101220112. Its totient is φ = 10101220110.

The previous prime is 10101220099. The next prime is 10101220117. The reversal of 10101220111 is 11102210101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10101220111 - 2¹¹ = 10101218063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10101220117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050610055 + 5050610056.

It is an arithmetic number, because the mean of its divisors is an integer number (5050610056).

Almost surely, 2^10101220111 is an apocalyptic number.

10101220111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101220111 is an equidigital number, since it uses as much as digits as its factorization.

10101220111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10101220111 its reverse (11102210101), we get a palindrome (21203430212).

The spelling of 10101220111 in words is "ten billion, one hundred one million, two hundred twenty thousand, one hundred eleven".