21900883 has 2 divisors, whose sum is σ = 21900884. Its totient is φ = 21900882.

The previous prime is 21900833. The next prime is 21900937. The reversal of 21900883 is 38800912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21900883 - 2⁹ = 21900371 is a prime.

It is not a weakly prime, because it can be changed into another prime (21900833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10950441 + 10950442.

It is an arithmetic number, because the mean of its divisors is an integer number (10950442).

Almost surely, 2^21900883 is an apocalyptic number.

21900883 is a deficient number, since it is larger than the sum of its proper divisors (1).

21900883 is an equidigital number, since it uses as much as digits as its factorization.

21900883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 21900883 is about 4679.8379245440. The cubic root of 21900883 is about 279.7824969044.

The spelling of 21900883 in words is "twenty-one million, nine hundred thousand, eight hundred eighty-three".