21110099967 has 48 divisors (see below), whose sum is σ = 35869317120. Its totient is φ = 11824963200.

The previous prime is 21110099909. The next prime is 21110099971. The reversal of 21110099967 is 76999001112.

It is not a de Polignac number, because 21110099967 - 2⁶ = 21110099903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110099767) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59743 + ... + 213984.

It is an arithmetic number, because the mean of its divisors is an integer number (747277440).

Almost surely, 2^21110099967 is an apocalyptic number.

21110099967 is a deficient number, since it is larger than the sum of its proper divisors (14759217153).

21110099967 is a wasteful number, since it uses less digits than its factorization.

21110099967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273804 (or 273801 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 45.

The spelling of 21110099967 in words is "twenty-one billion, one hundred ten million, ninety-nine thousand, nine hundred sixty-seven".