20201001013 has 2 divisors, whose sum is σ = 20201001014. Its totient is φ = 20201001012.

The previous prime is 20201000987. The next prime is 20201001019. The reversal of 20201001013 is 31010010202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11902155409 + 8298845604 = 109097^2 + 91098^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201001013 - 2²¹ = 20198903861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20201001019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100500506 + 10100500507.

It is an arithmetic number, because the mean of its divisors is an integer number (10100500507).

Almost surely, 2^20201001013 is an apocalyptic number.

It is an amenable number.

20201001013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201001013 is an equidigital number, since it uses as much as digits as its factorization.

20201001013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20201001013 its reverse (31010010202), we get a palindrome (51211011215).

The spelling of 20201001013 in words is "twenty billion, two hundred one million, one thousand, thirteen".