21926967107 has 2 divisors, whose sum is σ = 21926967108. Its totient is φ = 21926967106.

The previous prime is 21926967091. The next prime is 21926967137. The reversal of 21926967107 is 70176962912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21926967107 - 2⁴ = 21926967091 is a prime.

It is a super-2 number, since 2×21926967107² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21926967137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10963483553 + 10963483554.

It is an arithmetic number, because the mean of its divisors is an integer number (10963483554).

Almost surely, 2^21926967107 is an apocalyptic number.

21926967107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21926967107 is an equidigital number, since it uses as much as digits as its factorization.

21926967107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 50.

The spelling of 21926967107 in words is "twenty-one billion, nine hundred twenty-six million, nine hundred sixty-seven thousand, one hundred seven".