12122002111 has 4 divisors (see below), whose sum is σ = 12126370032. Its totient is φ = 12117634192.

The previous prime is 12122002097. The next prime is 12122002129. The reversal of 12122002111 is 11120022121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12122002111 - 2¹⁷ = 12121871039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122002091 and 12122002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122002141) 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, 2179795 + ... + 2185348.

It is an arithmetic number, because the mean of its divisors is an integer number (3031592508).

Almost surely, 2^12122002111 is an apocalyptic number.

12122002111 is a deficient number, since it is larger than the sum of its proper divisors (4367921).

12122002111 is an equidigital number, since it uses as much as digits as its factorization.

12122002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367920.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12122002111 its reverse (11120022121), we get a palindrome (23242024232).

The spelling of 12122002111 in words is "twelve billion, one hundred twenty-two million, two thousand, one hundred eleven".