20512224503 has 2 divisors, whose sum is σ = 20512224504. Its totient is φ = 20512224502.

The previous prime is 20512224479. The next prime is 20512224529. The reversal of 20512224503 is 30542221502.

It is an a-pointer prime, because the next prime (20512224529) can be obtained adding 20512224503 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20512224503 - 2²² = 20508030199 is a prime.

It is a super-2 number, since 2×20512224503² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20512221503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10256112251 + 10256112252.

It is an arithmetic number, because the mean of its divisors is an integer number (10256112252).

Almost surely, 2^20512224503 is an apocalyptic number.

20512224503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20512224503 is an equidigital number, since it uses as much as digits as its factorization.

20512224503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 20512224503 in words is "twenty billion, five hundred twelve million, two hundred twenty-four thousand, five hundred three".