121011222111011 has 2 divisors, whose sum is σ = 121011222111012. Its totient is φ = 121011222111010.

The previous prime is 121011222110929. The next prime is 121011222111161. The reversal of 121011222111011 is 110111222110121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121011222111011 - 2²⁶ = 121011155002147 is a prime.

It is not a weakly prime, because it can be changed into another prime (121011222114011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505611055505 + 60505611055506.

It is an arithmetic number, because the mean of its divisors is an integer number (60505611055506).

Almost surely, 2^{121011222111011} is an apocalyptic number.

121011222111011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121011222111011 is an equidigital number, since it uses as much as digits as its factorization.

121011222111011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121011222111011 its reverse (110111222110121), we get a palindrome (231122444221132).

The spelling of 121011222111011 in words is "one hundred twenty-one trillion, eleven billion, two hundred twenty-two million, one hundred eleven thousand, eleven".