26221199 has 2 divisors, whose sum is σ = 26221200. Its totient is φ = 26221198.

The previous prime is 26221183. The next prime is 26221229. The reversal of 26221199 is 99112262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26221199 - 2⁴ = 26221183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26221109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13110599 + 13110600.

It is an arithmetic number, because the mean of its divisors is an integer number (13110600).

Almost surely, 2^26221199 is an apocalyptic number.

26221199 is a deficient number, since it is larger than the sum of its proper divisors (1).

26221199 is an equidigital number, since it uses as much as digits as its factorization.

26221199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 32.

The square root of 26221199 is about 5120.6639217976. The cubic root of 26221199 is about 297.0873652296.

It can be divided in two parts, 2622 and 1199, that multiplied together give a triangular number (3143778 = T₂₅₀₇).

The spelling of 26221199 in words is "twenty-six million, two hundred twenty-one thousand, one hundred ninety-nine".