1001222012137 has 2 divisors, whose sum is σ = 1001222012138. Its totient is φ = 1001222012136.

The previous prime is 1001222012071. The next prime is 1001222012237. The reversal of 1001222012137 is 7312102221001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 805490095081 + 195731917056 = 897491^2 + 442416^2 .

It is an emirp because it is prime and its reverse (7312102221001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001222012137 - 2³¹ = 999074528489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001222012237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500611006068 + 500611006069.

It is an arithmetic number, because the mean of its divisors is an integer number (500611006069).

Almost surely, 2^{1001222012137} is an apocalyptic number.

It is an amenable number.

1001222012137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001222012137 is an equidigital number, since it uses as much as digits as its factorization.

1001222012137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 1001222012137 its reverse (7312102221001), we get a palindrome (8313324233138).

The spelling of 1001222012137 in words is "one trillion, one billion, two hundred twenty-two million, twelve thousand, one hundred thirty-seven".