1001201021237 has 2 divisors, whose sum is σ = 1001201021238. Its totient is φ = 1001201021236.

The previous prime is 1001201021207. The next prime is 1001201021273. The reversal of 1001201021237 is 7321201021001.

1001201021237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (1001201021273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 644542431556 + 356658589681 = 802834^2 + 597209^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001201021237 - 2¹⁰ = 1001201020213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001201021207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500600510618 + 500600510619.

It is an arithmetic number, because the mean of its divisors is an integer number (500600510619).

Almost surely, 2^{1001201021237} is an apocalyptic number.

It is an amenable number.

1001201021237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001201021237 is an equidigital number, since it uses as much as digits as its factorization.

1001201021237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 1001201021237 its reverse (7321201021001), we get a palindrome (8322402042238).

The spelling of 1001201021237 in words is "one trillion, one billion, two hundred one million, twenty-one thousand, two hundred thirty-seven".