121121011020011 has 2 divisors, whose sum is σ = 121121011020012. Its totient is φ = 121121011020010.

The previous prime is 121121011019963. The next prime is 121121011020073. The reversal of 121121011020011 is 110020110121121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121121011020011 - 2¹⁸ = 121121010757867 is a prime.

It is a super-2 number, since 2×121121011020011² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121121011020211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560505510005 + 60560505510006.

It is an arithmetic number, because the mean of its divisors is an integer number (60560505510006).

Almost surely, 2^{121121011020011} is an apocalyptic number.

121121011020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121011020011 is an equidigital number, since it uses as much as digits as its factorization.

121121011020011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121121011020011 its reverse (110020110121121), we get a palindrome (231141121141132).

The spelling of 121121011020011 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, eleven million, twenty thousand, eleven".