12111120101 has 2 divisors, whose sum is σ = 12111120102. Its totient is φ = 12111120100.

The previous prime is 12111120017. The next prime is 12111120107. The reversal of 12111120101 is 10102111121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6308489476 + 5802630625 = 79426^2 + 76175^2 .

It is a cyclic number.

It is not a de Polignac number, because 12111120101 - 2²² = 12106925797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12111120107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055560050 + 6055560051.

It is an arithmetic number, because the mean of its divisors is an integer number (6055560051).

Almost surely, 2^12111120101 is an apocalyptic number.

It is an amenable number.

12111120101 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111120101 is an equidigital number, since it uses as much as digits as its factorization.

12111120101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12111120101 its reverse (10102111121), we get a palindrome (22213231222).

The spelling of 12111120101 in words is "twelve billion, one hundred eleven million, one hundred twenty thousand, one hundred one".