21112677067 has 2 divisors, whose sum is σ = 21112677068. Its totient is φ = 21112677066.

The previous prime is 21112677059. The next prime is 21112677119. The reversal of 21112677067 is 76077621112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21112677067 - 2³ = 21112677059 is a prime.

It is not a weakly prime, because it can be changed into another prime (21112677167) 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, 10556338533 + 10556338534.

It is an arithmetic number, because the mean of its divisors is an integer number (10556338534).

Almost surely, 2^21112677067 is an apocalyptic number.

21112677067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112677067 is an equidigital number, since it uses as much as digits as its factorization.

21112677067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 40.

The spelling of 21112677067 in words is "twenty-one billion, one hundred twelve million, six hundred seventy-seven thousand, sixty-seven".