121201020011 has 2 divisors, whose sum is σ = 121201020012. Its totient is φ = 121201020010.

The previous prime is 121201020001. The next prime is 121201020019. The reversal of 121201020011 is 110020102121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121201020011 - 2²² = 121196825707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121201019974 and 121201020001.

It is not a weakly prime, because it can be changed into another prime (121201020019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600510005 + 60600510006.

It is an arithmetic number, because the mean of its divisors is an integer number (60600510006).

Almost surely, 2^121201020011 is an apocalyptic number.

121201020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201020011 is an equidigital number, since it uses as much as digits as its factorization.

121201020011 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 11.

Adding to 121201020011 its reverse (110020102121), we get a palindrome (231221122132).

The spelling of 121201020011 in words is "one hundred twenty-one billion, two hundred one million, twenty thousand, eleven".