21759200107 has 2 divisors, whose sum is σ = 21759200108. Its totient is φ = 21759200106.

The previous prime is 21759200069. The next prime is 21759200129. The reversal of 21759200107 is 70100295712.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21759200107 is a prime.

It is a super-2 number, since 2×21759200107² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21759200707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10879600053 + 10879600054.

It is an arithmetic number, because the mean of its divisors is an integer number (10879600054).

Almost surely, 2^21759200107 is an apocalyptic number.

21759200107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21759200107 is an equidigital number, since it uses as much as digits as its factorization.

21759200107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 34.

Adding to 21759200107 its reverse (70100295712), we get a palindrome (91859495819).

The spelling of 21759200107 in words is "twenty-one billion, seven hundred fifty-nine million, two hundred thousand, one hundred seven".