20012200427 has 2 divisors, whose sum is σ = 20012200428. Its totient is φ = 20012200426.

The previous prime is 20012200349. The next prime is 20012200441. The reversal of 20012200427 is 72400221002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012200427 - 2¹² = 20012196331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20012200399 and 20012200408.

It is not a weakly prime, because it can be changed into another prime (20012200457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006100213 + 10006100214.

It is an arithmetic number, because the mean of its divisors is an integer number (10006100214).

Almost surely, 2^20012200427 is an apocalyptic number.

20012200427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012200427 is an equidigital number, since it uses as much as digits as its factorization.

20012200427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 20.

Adding to 20012200427 its reverse (72400221002), we get a palindrome (92412421429).

The spelling of 20012200427 in words is "twenty billion, twelve million, two hundred thousand, four hundred twenty-seven".