1111622201 has 2 divisors, whose sum is σ = 1111622202. Its totient is φ = 1111622200.

The previous prime is 1111622147. The next prime is 1111622203. The reversal of 1111622201 is 1022261111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 954871801 + 156750400 = 30901^2 + 12520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111622201 is a prime.

It is a Sophie Germain prime.

Together with 1111622203, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111622201.

It is not a weakly prime, because it can be changed into another prime (1111622203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555811100 + 555811101.

It is an arithmetic number, because the mean of its divisors is an integer number (555811101).

Almost surely, 2^1111622201 is an apocalyptic number.

It is an amenable number.

1111622201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111622201 is an equidigital number, since it uses as much as digits as its factorization.

1111622201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 1111622201 is about 33340.9988002759. The cubic root of 1111622201 is about 1035.9029518197.

Adding to 1111622201 its reverse (1022261111), we get a palindrome (2133883312).

The spelling of 1111622201 in words is "one billion, one hundred eleven million, six hundred twenty-two thousand, two hundred one".