1021201201 has 2 divisors, whose sum is σ = 1021201202. Its totient is φ = 1021201200.

The previous prime is 1021201187. The next prime is 1021201217. The reversal of 1021201201 is 1021021201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 543822400 + 477378801 = 23320^2 + 21849^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021201201 - 2²⁵ = 987646769 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021201231) 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, 510600600 + 510600601.

It is an arithmetic number, because the mean of its divisors is an integer number (510600601).

Almost surely, 2^1021201201 is an apocalyptic number.

It is an amenable number.

1021201201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021201201 is an equidigital number, since it uses as much as digits as its factorization.

1021201201 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 10.

The square root of 1021201201 is about 31956.2388431430. The cubic root of 1021201201 is about 1007.0177036327.

Adding to 1021201201 its reverse (1021021201), we get a palindrome (2042222402).

The spelling of 1021201201 in words is "one billion, twenty-one million, two hundred one thousand, two hundred one".