12122123011 has 4 divisors (see below), whose sum is σ = 12133054800. Its totient is φ = 12111191224.

The previous prime is 12122122993. The next prime is 12122123053. The reversal of 12122123011 is 11032122121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11032122121 = 61 ⋅180854461.

It is a cyclic number.

It is not a de Polignac number, because 12122123011 - 2⁵ = 12122122979 is a prime.

It is a super-2 number, since 2×12122123011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122123081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5464231 + ... + 5466448.

It is an arithmetic number, because the mean of its divisors is an integer number (3033263700).

Almost surely, 2^12122123011 is an apocalyptic number.

12122123011 is a deficient number, since it is larger than the sum of its proper divisors (10931789).

12122123011 is a wasteful number, since it uses less digits than its factorization.

12122123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10931788.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12122123011 its reverse (11032122121), we get a palindrome (23154245132).

The spelling of 12122123011 in words is "twelve billion, one hundred twenty-two million, one hundred twenty-three thousand, eleven".