21550120483 has 2 divisors, whose sum is σ = 21550120484. Its totient is φ = 21550120482.

The previous prime is 21550120399. The next prime is 21550120489. The reversal of 21550120483 is 38402105512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21550120483 - 2⁹ = 21550119971 is a prime.

It is not a weakly prime, because it can be changed into another prime (21550120489) 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, 10775060241 + 10775060242.

It is an arithmetic number, because the mean of its divisors is an integer number (10775060242).

Almost surely, 2^21550120483 is an apocalyptic number.

21550120483 is a deficient number, since it is larger than the sum of its proper divisors (1).

21550120483 is an equidigital number, since it uses as much as digits as its factorization.

21550120483 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 21550120483 its reverse (38402105512), we get a palindrome (59952225995).

The spelling of 21550120483 in words is "twenty-one billion, five hundred fifty million, one hundred twenty thousand, four hundred eighty-three".