1001200222237 has 2 divisors, whose sum is σ = 1001200222238. Its totient is φ = 1001200222236.

The previous prime is 1001200222193. The next prime is 1001200222273. The reversal of 1001200222237 is 7322220021001.

Together with next prime (1001200222273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 830906994681 + 170293227556 = 911541^2 + 412666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001200222237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001200222277) 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, 500600111118 + 500600111119.

It is an arithmetic number, because the mean of its divisors is an integer number (500600111119).

Almost surely, 2^{1001200222237} is an apocalyptic number.

It is an amenable number.

1001200222237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001200222237 is an equidigital number, since it uses as much as digits as its factorization.

1001200222237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 1001200222237 its reverse (7322220021001), we get a palindrome (8323420243238).

The spelling of 1001200222237 in words is "one trillion, one billion, two hundred million, two hundred twenty-two thousand, two hundred thirty-seven".