121221220002011 has 2 divisors, whose sum is σ = 121221220002012. Its totient is φ = 121221220002010.

The previous prime is 121221220001963. The next prime is 121221220002013. The reversal of 121221220002011 is 110200022122121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121221220002011 - 2²² = 121221215807707 is a prime.

Together with 121221220002013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121221220002013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610610001005 + 60610610001006.

It is an arithmetic number, because the mean of its divisors is an integer number (60610610001006).

Almost surely, 2^{121221220002011} is an apocalyptic number.

121221220002011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221220002011 is an equidigital number, since it uses as much as digits as its factorization.

121221220002011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121221220002011 its reverse (110200022122121), we get a palindrome (231421242124132).

The spelling of 121221220002011 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred twenty million, two thousand, eleven".