1222012201 has 2 divisors, whose sum is σ = 1222012202. Its totient is φ = 1222012200.

The previous prime is 1222012199. The next prime is 1222012249. The reversal of 1222012201 is 1022102221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722534400 + 499477801 = 26880^2 + 22349^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222012201 - 2¹ = 1222012199 is a prime.

Together with 1222012199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1222012261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611006100 + 611006101.

It is an arithmetic number, because the mean of its divisors is an integer number (611006101).

Almost surely, 2^1222012201 is an apocalyptic number.

It is an amenable number.

1222012201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222012201 is an equidigital number, since it uses as much as digits as its factorization.

1222012201 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 13.

The square root of 1222012201 is about 34957.2910992829. The cubic root of 1222012201 is about 1069.1168655559.

Adding to 1222012201 its reverse (1022102221), we get a palindrome (2244114422).

The spelling of 1222012201 in words is "one billion, two hundred twenty-two million, twelve thousand, two hundred one".