21886103 has 2 divisors, whose sum is σ = 21886104. Its totient is φ = 21886102.

The previous prime is 21886063. The next prime is 21886127. The reversal of 21886103 is 30168812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21886103 - 2¹⁴ = 21869719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21886603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10943051 + 10943052.

It is an arithmetic number, because the mean of its divisors is an integer number (10943052).

Almost surely, 2^21886103 is an apocalyptic number.

21886103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21886103 is an equidigital number, since it uses as much as digits as its factorization.

21886103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 21886103 is about 4678.2585435181. The cubic root of 21886103 is about 279.7195448630.

The spelling of 21886103 in words is "twenty-one million, eight hundred eighty-six thousand, one hundred three".