21104255577107 has 2 divisors, whose sum is σ = 21104255577108. Its totient is φ = 21104255577106.

The previous prime is 21104255577049. The next prime is 21104255577131. The reversal of 21104255577107 is 70177555240112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21104255577107 - 2²⁶ = 21104188468243 is a prime.

It is not a weakly prime, because it can be changed into another prime (21104255577607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10552127788553 + 10552127788554.

It is an arithmetic number, because the mean of its divisors is an integer number (10552127788554).

Almost surely, 2^{21104255577107} is an apocalyptic number.

21104255577107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21104255577107 is an equidigital number, since it uses as much as digits as its factorization.

21104255577107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 686000, while the sum is 47.

The spelling of 21104255577107 in words is "twenty-one trillion, one hundred four billion, two hundred fifty-five million, five hundred seventy-seven thousand, one hundred seven".