1001222137 has 2 divisors, whose sum is σ = 1001222138. Its totient is φ = 1001222136.

The previous prime is 1001222107. The next prime is 1001222161. The reversal of 1001222137 is 7312221001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1000836496 + 385641 = 31636^2 + 621^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001222137 - 2¹⁵ = 1001189369 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001222107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500611068 + 500611069.

It is an arithmetic number, because the mean of its divisors is an integer number (500611069).

Almost surely, 2^1001222137 is an apocalyptic number.

It is an amenable number.

1001222137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001222137 is an equidigital number, since it uses as much as digits as its factorization.

1001222137 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 19.

The square root of 1001222137 is about 31642.0943839058. The cubic root of 1001222137 is about 1000.4072131549.

Adding to 1001222137 its reverse (7312221001), we get a palindrome (8313443138).

The spelling of 1001222137 in words is "one billion, one million, two hundred twenty-two thousand, one hundred thirty-seven".