121201102001281 has 2 divisors, whose sum is σ = 121201102001282. Its totient is φ = 121201102001280.

The previous prime is 121201102001263. The next prime is 121201102001311. The reversal of 121201102001281 is 182100201102121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120715069935681 + 486032065600 = 10987041^2 + 697160^2 .

It is a cyclic number.

It is not a de Polignac number, because 121201102001281 - 2¹⁷ = 121201101870209 is a prime.

It is a super-2 number, since 2×121201102001281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121201102001081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600551000640 + 60600551000641.

It is an arithmetic number, because the mean of its divisors is an integer number (60600551000641).

Almost surely, 2^{121201102001281} is an apocalyptic number.

It is an amenable number.

121201102001281 is a deficient number, since it is larger than the sum of its proper divisors (1).

121201102001281 is an equidigital number, since it uses as much as digits as its factorization.

121201102001281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 22.

The spelling of 121201102001281 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred two million, one thousand, two hundred eighty-one".