21102883 has 2 divisors, whose sum is σ = 21102884. Its totient is φ = 21102882.

The previous prime is 21102877. The next prime is 21102911. The reversal of 21102883 is 38820112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21102883 - 2²¹ = 19005731 is a prime.

It is not a weakly prime, because it can be changed into another prime (21102853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551441 + 10551442.

It is an arithmetic number, because the mean of its divisors is an integer number (10551442).

Almost surely, 2^21102883 is an apocalyptic number.

21102883 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102883 is an equidigital number, since it uses as much as digits as its factorization.

21102883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 21102883 is about 4593.7874352216. The cubic root of 21102883 is about 276.3422336927.

Adding to 21102883 its reverse (38820112), we get a palindrome (59922995).

The spelling of 21102883 in words is "twenty-one million, one hundred two thousand, eight hundred eighty-three".