21011155483 has 2 divisors, whose sum is σ = 21011155484. Its totient is φ = 21011155482.

The previous prime is 21011155481. The next prime is 21011155549. The reversal of 21011155483 is 38455111012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21011155483 - 2¹ = 21011155481 is a prime.

Together with 21011155481, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21011155481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505577741 + 10505577742.

It is an arithmetic number, because the mean of its divisors is an integer number (10505577742).

Almost surely, 2^21011155483 is an apocalyptic number.

21011155483 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011155483 is an equidigital number, since it uses as much as digits as its factorization.

21011155483 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 31.

Adding to 21011155483 its reverse (38455111012), we get a palindrome (59466266495).

The spelling of 21011155483 in words is "twenty-one billion, eleven million, one hundred fifty-five thousand, four hundred eighty-three".