1230121201 has 2 divisors, whose sum is σ = 1230121202. Its totient is φ = 1230121200.

The previous prime is 1230121183. The next prime is 1230121229. The reversal of 1230121201 is 1021210321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 861481201 + 368640000 = 29351^2 + 19200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230121201 - 2¹³ = 1230113009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1230121301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615060600 + 615060601.

It is an arithmetic number, because the mean of its divisors is an integer number (615060601).

Almost surely, 2^1230121201 is an apocalyptic number.

It is an amenable number.

1230121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230121201 is an equidigital number, since it uses as much as digits as its factorization.

1230121201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1230121201 is about 35073.0837110169. The cubic root of 1230121201 is about 1071.4764608800.

Adding to 1230121201 its reverse (1021210321), we get a palindrome (2251331522).

The spelling of 1230121201 in words is "one billion, two hundred thirty million, one hundred twenty-one thousand, two hundred one".