121110201281 has 2 divisors, whose sum is σ = 121110201282. Its totient is φ = 121110201280.

The previous prime is 121110201257. The next prime is 121110201301. The reversal of 121110201281 is 182102011121.

It is a happy number.

It is an a-pointer prime, because the next prime (121110201301) can be obtained adding 121110201281 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104355487681 + 16754713600 = 323041^2 + 129440^2 .

It is a cyclic number.

It is not a de Polignac number, because 121110201281 - 2¹⁰ = 121110200257 is a prime.

It is a super-2 number, since 2×121110201281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121110201221) 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, 60555100640 + 60555100641.

It is an arithmetic number, because the mean of its divisors is an integer number (60555100641).

Almost surely, 2^121110201281 is an apocalyptic number.

It is an amenable number.

121110201281 is a deficient number, since it is larger than the sum of its proper divisors (1).

121110201281 is an equidigital number, since it uses as much as digits as its factorization.

121110201281 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 20.

The spelling of 121110201281 in words is "one hundred twenty-one billion, one hundred ten million, two hundred one thousand, two hundred eighty-one".