20212463 has 2 divisors, whose sum is σ = 20212464. Its totient is φ = 20212462.

The previous prime is 20212457. The next prime is 20212477. The reversal of 20212463 is 36421202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212463 - 2⁶ = 20212399 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106231 + 10106232.

It is an arithmetic number, because the mean of its divisors is an integer number (10106232).

Almost surely, 2^20212463 is an apocalyptic number.

20212463 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212463 is an equidigital number, since it uses as much as digits as its factorization.

20212463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20212463 is about 4495.8272876079. The cubic root of 20212463 is about 272.3995668380.

Adding to 20212463 its reverse (36421202), we get a palindrome (56633665).

The spelling of 20212463 in words is "twenty million, two hundred twelve thousand, four hundred sixty-three".