109599921811 has 2 divisors, whose sum is σ = 109599921812. Its totient is φ = 109599921810.

The previous prime is 109599921731. The next prime is 109599921817. The reversal of 109599921811 is 118129995901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109599921811 - 2²⁷ = 109465704083 is a prime.

It is not a weakly prime, because it can be changed into another prime (109599921817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54799960905 + 54799960906.

It is an arithmetic number, because the mean of its divisors is an integer number (54799960906).

Almost surely, 2^109599921811 is an apocalyptic number.

109599921811 is a deficient number, since it is larger than the sum of its proper divisors (1).

109599921811 is an equidigital number, since it uses as much as digits as its factorization.

109599921811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 55.

The spelling of 109599921811 in words is "one hundred nine billion, five hundred ninety-nine million, nine hundred twenty-one thousand, eight hundred eleven".