121221202102027 has 2 divisors, whose sum is σ = 121221202102028. Its totient is φ = 121221202102026.

The previous prime is 121221202101977. The next prime is 121221202102079. The reversal of 121221202102027 is 720201202122121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121221202102027 - 2¹⁹ = 121221201577739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121221202101992 and 121221202102010.

It is not a weakly prime, because it can be changed into another prime (121221202102327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610601051013 + 60610601051014.

It is an arithmetic number, because the mean of its divisors is an integer number (60610601051014).

Almost surely, 2^{121221202102027} is an apocalyptic number.

121221202102027 is a deficient number, since it is larger than the sum of its proper divisors (1).

121221202102027 is an equidigital number, since it uses as much as digits as its factorization.

121221202102027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 121221202102027 its reverse (720201202122121), we get a palindrome (841422404224148).

The spelling of 121221202102027 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two hundred two million, one hundred two thousand, twenty-seven".