21882299 has 2 divisors, whose sum is σ = 21882300. Its totient is φ = 21882298.

The previous prime is 21882283. The next prime is 21882331. The reversal of 21882299 is 99228812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21882299 - 2⁴ = 21882283 is a prime.

It is not a weakly prime, because it can be changed into another prime (21882209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10941149 + 10941150.

It is an arithmetic number, because the mean of its divisors is an integer number (10941150).

Almost surely, 2^21882299 is an apocalyptic number.

21882299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21882299 is an equidigital number, since it uses as much as digits as its factorization.

21882299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 41.

The square root of 21882299 is about 4677.8519643101. The cubic root of 21882299 is about 279.7033380064.

The spelling of 21882299 in words is "twenty-one million, eight hundred eighty-two thousand, two hundred ninety-nine".