121212020201 has 2 divisors, whose sum is σ = 121212020202. Its totient is φ = 121212020200.

The previous prime is 121212020173. The next prime is 121212020219. The reversal of 121212020201 is 102020212121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104344504576 + 16867515625 = 323024^2 + 129875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121212020201 is a prime.

It is not a weakly prime, because it can be changed into another prime (121212020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60606010100 + 60606010101.

It is an arithmetic number, because the mean of its divisors is an integer number (60606010101).

Almost surely, 2^121212020201 is an apocalyptic number.

It is an amenable number.

121212020201 is a deficient number, since it is larger than the sum of its proper divisors (1).

121212020201 is an equidigital number, since it uses as much as digits as its factorization.

121212020201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121212020201 its reverse (102020212121), we get a palindrome (223232232322).

It can be divided in two parts, 1212120 and 20201, that added together give a palindrome (1232321).

The spelling of 121212020201 in words is "one hundred twenty-one billion, two hundred twelve million, twenty thousand, two hundred one".