121101120101111 has 2 divisors, whose sum is σ = 121101120101112. Its totient is φ = 121101120101110.

The previous prime is 121101120101053. The next prime is 121101120101131. The reversal of 121101120101111 is 111101021101121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121101120101111 - 2¹⁴ = 121101120084727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121101120101131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550560050555 + 60550560050556.

It is an arithmetic number, because the mean of its divisors is an integer number (60550560050556).

Almost surely, 2^{121101120101111} is an apocalyptic number.

121101120101111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121101120101111 is an equidigital number, since it uses as much as digits as its factorization.

121101120101111 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 14.

Adding to 121101120101111 its reverse (111101021101121), we get a palindrome (232202141202232).

The spelling of 121101120101111 in words is "one hundred twenty-one trillion, one hundred one billion, one hundred twenty million, one hundred one thousand, one hundred eleven".