121123320011 has 2 divisors, whose sum is σ = 121123320012. Its totient is φ = 121123320010.

The previous prime is 121123319981. The next prime is 121123320023. The reversal of 121123320011 is 110023321121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121123320011 - 2¹⁴ = 121123303627 is a prime.

It is a super-2 number, since 2×121123320011² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (121123320041) 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, 60561660005 + 60561660006.

It is an arithmetic number, because the mean of its divisors is an integer number (60561660006).

Almost surely, 2^121123320011 is an apocalyptic number.

121123320011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121123320011 is an equidigital number, since it uses as much as digits as its factorization.

121123320011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121123320011 its reverse (110023321121), we get a palindrome (231146641132).

The spelling of 121123320011 in words is "one hundred twenty-one billion, one hundred twenty-three million, three hundred twenty thousand, eleven".