1212101201 has 2 divisors, whose sum is σ = 1212101202. Its totient is φ = 1212101200.

The previous prime is 1212101161. The next prime is 1212101237. The reversal of 1212101201 is 1021012121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 967210000 + 244891201 = 31100^2 + 15649^2 .

It is an emirp because it is prime and its reverse (1021012121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212101201 - 2¹⁰ = 1212100177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212101291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050600 + 606050601.

It is an arithmetic number, because the mean of its divisors is an integer number (606050601).

Almost surely, 2^1212101201 is an apocalyptic number.

It is an amenable number.

1212101201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212101201 is an equidigital number, since it uses as much as digits as its factorization.

1212101201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1212101201 is about 34815.2438021048. The cubic root of 1212101201 is about 1066.2186967332.

Adding to 1212101201 its reverse (1021012121), we get a palindrome (2233113322).

The spelling of 1212101201 in words is "one billion, two hundred twelve million, one hundred one thousand, two hundred one".