21700733107 has 2 divisors, whose sum is σ = 21700733108. Its totient is φ = 21700733106.

The previous prime is 21700733083. The next prime is 21700733177. The reversal of 21700733107 is 70133700712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21700733107 - 2¹⁵ = 21700700339 is a prime.

It is not a weakly prime, because it can be changed into another prime (21700733177) 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, 10850366553 + 10850366554.

It is an arithmetic number, because the mean of its divisors is an integer number (10850366554).

Almost surely, 2^21700733107 is an apocalyptic number.

21700733107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21700733107 is an equidigital number, since it uses as much as digits as its factorization.

21700733107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6174, while the sum is 31.

The spelling of 21700733107 in words is "twenty-one billion, seven hundred million, seven hundred thirty-three thousand, one hundred seven".