1001212013 has 2 divisors, whose sum is σ = 1001212014. Its totient is φ = 1001212012.

The previous prime is 1001211989. The next prime is 1001212019. The reversal of 1001212013 is 3102121001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999950884 + 1261129 = 31622^2 + 1123^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001212013 - 2⁶ = 1001211949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1001211985 and 1001212003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001212019) 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, 500606006 + 500606007.

It is an arithmetic number, because the mean of its divisors is an integer number (500606007).

Almost surely, 2^1001212013 is an apocalyptic number.

It is an amenable number.

1001212013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001212013 is an equidigital number, since it uses as much as digits as its factorization.

1001212013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1001212013 is about 31641.9344067331. The cubic root of 1001212013 is about 1000.4038412236.

Adding to 1001212013 its reverse (3102121001), we get a palindrome (4103333014).

The spelling of 1001212013 in words is "one billion, one million, two hundred twelve thousand, thirteen".