1211024201 has 2 divisors, whose sum is σ = 1211024202. Its totient is φ = 1211024200.

The previous prime is 1211024173. The next prime is 1211024203. The reversal of 1211024201 is 1024201121.

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., 1203049225 + 7974976 = 34685^2 + 2824^2 .

It is an emirp because it is prime and its reverse (1024201121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1211024201 - 2¹⁸ = 1210762057 is a prime.

Together with 1211024203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1211024203) 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, 605512100 + 605512101.

It is an arithmetic number, because the mean of its divisors is an integer number (605512101).

Almost surely, 2^1211024201 is an apocalyptic number.

It is an amenable number.

1211024201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211024201 is an equidigital number, since it uses as much as digits as its factorization.

1211024201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1211024201 is about 34799.7730021332. The cubic root of 1211024201 is about 1065.9028106196.

Adding to 1211024201 its reverse (1024201121), we get a palindrome (2235225322).

The spelling of 1211024201 in words is "one billion, two hundred eleven million, twenty-four thousand, two hundred one".