121021200011 has 2 divisors, whose sum is σ = 121021200012. Its totient is φ = 121021200010.

The previous prime is 121021200007. The next prime is 121021200019. The reversal of 121021200011 is 110002120121.

It is a weak prime.

It is an emirp because it is prime and its reverse (110002120121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121021200011 - 2² = 121021200007 is a prime.

It is a super-2 number, since 2×121021200011² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121021199965 and 121021200001.

It is not a weakly prime, because it can be changed into another prime (121021200019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510600005 + 60510600006.

It is an arithmetic number, because the mean of its divisors is an integer number (60510600006).

Almost surely, 2^121021200011 is an apocalyptic number.

121021200011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121021200011 is an equidigital number, since it uses as much as digits as its factorization.

121021200011 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 121021200011 its reverse (110002120121), we get a palindrome (231023320132).

The spelling of 121021200011 in words is "one hundred twenty-one billion, twenty-one million, two hundred thousand, eleven".