20013003331091 has 2 divisors, whose sum is σ = 20013003331092. Its totient is φ = 20013003331090.

The previous prime is 20013003331049. The next prime is 20013003331121. The reversal of 20013003331091 is 19013330031002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20013003331091 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20013003331091.

It is not a weakly prime, because it can be changed into another prime (20013203331091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006501665545 + 10006501665546.

It is an arithmetic number, because the mean of its divisors is an integer number (10006501665546).

Almost surely, 2^{20013003331091} is an apocalyptic number.

20013003331091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013003331091 is an equidigital number, since it uses as much as digits as its factorization.

20013003331091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 26.

Adding to 20013003331091 its reverse (19013330031002), we get a palindrome (39026333362093).

The spelling of 20013003331091 in words is "twenty trillion, thirteen billion, three million, three hundred thirty-one thousand, ninety-one".