1210011121201 has 2 divisors, whose sum is σ = 1210011121202. Its totient is φ = 1210011121200.

The previous prime is 1210011121171. The next prime is 1210011121217. The reversal of 1210011121201 is 1021211100121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 851515546176 + 358495575025 = 922776^2 + 598745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210011121201 - 2³⁷ = 1072572167729 is a prime.

It is a super-2 number, since 2×1210011121201² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1210011161201) 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, 605005560600 + 605005560601.

It is an arithmetic number, because the mean of its divisors is an integer number (605005560601).

Almost surely, 2^{1210011121201} is an apocalyptic number.

It is an amenable number.

1210011121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210011121201 is an equidigital number, since it uses as much as digits as its factorization.

1210011121201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1210011121201 its reverse (1021211100121), we get a palindrome (2231222221322).

The spelling of 1210011121201 in words is "one trillion, two hundred ten billion, eleven million, one hundred twenty-one thousand, two hundred one".