1121122201 has 2 divisors, whose sum is σ = 1121122202. Its totient is φ = 1121122200.

The previous prime is 1121122199. The next prime is 1121122253. The reversal of 1121122201 is 1022211211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1009714176 + 111408025 = 31776^2 + 10555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121122201 - 2¹ = 1121122199 is a prime.

Together with 1121122199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1121122291) 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, 560561100 + 560561101.

It is an arithmetic number, because the mean of its divisors is an integer number (560561101).

Almost surely, 2^1121122201 is an apocalyptic number.

It is an amenable number.

1121122201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121122201 is an equidigital number, since it uses as much as digits as its factorization.

1121122201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1121122201 is about 33483.1629479654. The cubic root of 1121122201 is about 1038.8455511439.

Adding to 1121122201 its reverse (1022211211), we get a palindrome (2143333412).

The spelling of 1121122201 in words is "one billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred one".