123112322011 has 8 divisors (see below), whose sum is σ = 141542311680. Its totient is φ = 104892961128.

The previous prime is 123112321999. The next prime is 123112322033. The reversal of 123112322011 is 110223211321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123112322011 - 2⁵ = 123112321979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123112322011.

It is not an unprimeable number, because it can be changed into a prime (123112322071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52655941 + ... + 52658278.

It is an arithmetic number, because the mean of its divisors is an integer number (17692788960).

Almost surely, 2^123112322011 is an apocalyptic number.

123112322011 is a deficient number, since it is larger than the sum of its proper divisors (18429989669).

123112322011 is a wasteful number, since it uses less digits than its factorization.

123112322011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105314393.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123112322011 its reverse (110223211321), we get a palindrome (233335533332).

The spelling of 123112322011 in words is "one hundred twenty-three billion, one hundred twelve million, three hundred twenty-two thousand, eleven".