11209210959123 has 24 divisors (see below), whose sum is σ = 16801999080048. Its totient is φ = 7467801835104.

The previous prime is 11209210959097. The next prime is 11209210959137. The reversal of 11209210959123 is 32195901290211.

It is a happy number.

11209210959123 is a `hidden beast` number, since 1 + 1 + 20 + 9 + 2 + 10 + 9 + 591 + 23 = 666.

It is not a de Polignac number, because 11209210959123 - 2²¹ = 11209208861971 is a prime.

It is a super-2 number, since 2×11209210959123² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11209210959173) 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 in 23 ways as a sum of consecutive naturals, for example, 15085440 + ... + 15811037.

It is an arithmetic number, because the mean of its divisors is an integer number (700083295002).

Almost surely, 2^{11209210959123} is an apocalyptic number.

11209210959123 is a deficient number, since it is larger than the sum of its proper divisors (5592788120925).

11209210959123 is an equidigital number, since it uses as much as digits as its factorization.

11209210959123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30897985 (or 30897973 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The spelling of 11209210959123 in words is "eleven trillion, two hundred nine billion, two hundred ten million, nine hundred fifty-nine thousand, one hundred twenty-three".