21333333199 has 2 divisors, whose sum is σ = 21333333200. Its totient is φ = 21333333198.

The previous prime is 21333333187. The next prime is 21333333227. The reversal of 21333333199 is 99133333312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21333333199 - 2¹⁷ = 21333202127 is a prime.

It is a super-2 number, since 2×21333333199² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21333333169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666666599 + 10666666600.

It is an arithmetic number, because the mean of its divisors is an integer number (10666666600).

Almost surely, 2^21333333199 is an apocalyptic number.

21333333199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21333333199 is an equidigital number, since it uses as much as digits as its factorization.

21333333199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 118098, while the sum is 40.

The spelling of 21333333199 in words is "twenty-one billion, three hundred thirty-three million, three hundred thirty-three thousand, one hundred ninety-nine".