21350636119 has 2 divisors, whose sum is σ = 21350636120. Its totient is φ = 21350636118.

The previous prime is 21350636117. The next prime is 21350636183. The reversal of 21350636119 is 91163605312.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21350636119 - 2¹ = 21350636117 is a prime.

It is a super-2 number, since 2×21350636119² (a number of 21 digits) contains 22 as substring.

Together with 21350636117, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21350636117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10675318059 + 10675318060.

It is an arithmetic number, because the mean of its divisors is an integer number (10675318060).

Almost surely, 2^21350636119 is an apocalyptic number.

21350636119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21350636119 is an equidigital number, since it uses as much as digits as its factorization.

21350636119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The spelling of 21350636119 in words is "twenty-one billion, three hundred fifty million, six hundred thirty-six thousand, one hundred nineteen".