12122002123 has 64 divisors (see below), whose sum is σ = 15866173440. Its totient is φ = 8989056000.

The previous prime is 12122002097. The next prime is 12122002129. The reversal of 12122002123 is 32120022121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12122002123 - 2⁵ = 12122002091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122002097 and 12122002106.

It is not an unprimeable number, because it can be changed into a prime (12122002129) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29637943 + ... + 29638351.

It is an arithmetic number, because the mean of its divisors is an integer number (247908960).

Almost surely, 2^12122002123 is an apocalyptic number.

12122002123 is a deficient number, since it is larger than the sum of its proper divisors (3744171317).

12122002123 is a wasteful number, since it uses less digits than its factorization.

12122002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12122002123 its reverse (32120022121), we get a palindrome (44242024244).

The spelling of 12122002123 in words is "twelve billion, one hundred twenty-two million, two thousand, one hundred twenty-three".