20213120014247 has 2 divisors, whose sum is σ = 20213120014248. Its totient is φ = 20213120014246.

The previous prime is 20213120014193. The next prime is 20213120014279. The reversal of 20213120014247 is 74241002131202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20213120014247 - 2⁴⁰ = 19113608386471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20213120011247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106560007123 + 10106560007124.

It is an arithmetic number, because the mean of its divisors is an integer number (10106560007124).

Almost surely, 2^{20213120014247} is an apocalyptic number.

20213120014247 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213120014247 is an equidigital number, since it uses as much as digits as its factorization.

20213120014247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 20213120014247 its reverse (74241002131202), we get a palindrome (94454122145449).

The spelling of 20213120014247 in words is "twenty trillion, two hundred thirteen billion, one hundred twenty million, fourteen thousand, two hundred forty-seven".