20333100247 has 2 divisors, whose sum is σ = 20333100248. Its totient is φ = 20333100246.

The previous prime is 20333100199. The next prime is 20333100259. The reversal of 20333100247 is 74200133302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20333100247 - 2⁷ = 20333100119 is a prime.

It is a super-2 number, since 2×20333100247² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20333100947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10166550123 + 10166550124.

It is an arithmetic number, because the mean of its divisors is an integer number (10166550124).

Almost surely, 2^20333100247 is an apocalyptic number.

20333100247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20333100247 is an equidigital number, since it uses as much as digits as its factorization.

20333100247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 25.

Adding to 20333100247 its reverse (74200133302), we get a palindrome (94533233549).

The spelling of 20333100247 in words is "twenty billion, three hundred thirty-three million, one hundred thousand, two hundred forty-seven".