20003331013187 has 2 divisors, whose sum is σ = 20003331013188. Its totient is φ = 20003331013186.

The previous prime is 20003331013103. The next prime is 20003331013249. The reversal of 20003331013187 is 78131013330002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20003331013187 - 2¹² = 20003331009091 is a prime.

It is not a weakly prime, because it can be changed into another prime (20003331013087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001665506593 + 10001665506594.

It is an arithmetic number, because the mean of its divisors is an integer number (10001665506594).

Almost surely, 2^{20003331013187} is an apocalyptic number.

20003331013187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003331013187 is an equidigital number, since it uses as much as digits as its factorization.

20003331013187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

Adding to 20003331013187 its reverse (78131013330002), we get a palindrome (98134344343189).

The spelling of 20003331013187 in words is "twenty trillion, three billion, three hundred thirty-one million, thirteen thousand, one hundred eighty-seven".