21302012063 has 2 divisors, whose sum is σ = 21302012064. Its totient is φ = 21302012062.

The previous prime is 21302012057. The next prime is 21302012131. The reversal of 21302012063 is 36021020312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21302012063 - 2⁶ = 21302011999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21302012023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651006031 + 10651006032.

It is an arithmetic number, because the mean of its divisors is an integer number (10651006032).

Almost surely, 2^21302012063 is an apocalyptic number.

21302012063 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302012063 is an equidigital number, since it uses as much as digits as its factorization.

21302012063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21302012063 its reverse (36021020312), we get a palindrome (57323032375).

The spelling of 21302012063 in words is "twenty-one billion, three hundred two million, twelve thousand, sixty-three".