1012221013 has 2 divisors, whose sum is σ = 1012221014. Its totient is φ = 1012221012.

The previous prime is 1012220983. The next prime is 1012221031. The reversal of 1012221013 is 3101222101.

Together with next prime (1012221031) 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., 727219089 + 285001924 = 26967^2 + 16882^2 .

It is an emirp because it is prime and its reverse (3101222101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012221013 - 2⁵ = 1012220981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012220984 and 1012221002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012221113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506110506 + 506110507.

It is an arithmetic number, because the mean of its divisors is an integer number (506110507).

Almost surely, 2^1012221013 is an apocalyptic number.

It is an amenable number.

1012221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012221013 is an equidigital number, since it uses as much as digits as its factorization.

1012221013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1012221013 is about 31815.4209935999. The cubic root of 1012221013 is about 1004.0571879643.

Adding to 1012221013 its reverse (3101222101), we get a palindrome (4113443114).

It can be divided in two parts, 101222101 and 3, that multiplied together give a palindrome (303666303).

The spelling of 1012221013 in words is "one billion, twelve million, two hundred twenty-one thousand, thirteen".