12100111121 has 8 divisors (see below), whose sum is σ = 13962958464. Its totient is φ = 10270828800.

The previous prime is 12100111057. The next prime is 12100111129. The reversal of 12100111121 is 12111100121.

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 12100111121 - 2⁶ = 12100111057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12100111129) 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, 8390480 + ... + 8391921.

It is an arithmetic number, because the mean of its divisors is an integer number (1745369808).

Almost surely, 2^12100111121 is an apocalyptic number.

It is an amenable number.

12100111121 is a deficient number, since it is larger than the sum of its proper divisors (1862847343).

12100111121 is a wasteful number, since it uses less digits than its factorization.

12100111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16782511.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12100111121 its reverse (12111100121), we get a palindrome (24211211242).

The spelling of 12100111121 in words is "twelve billion, one hundred million, one hundred eleven thousand, one hundred twenty-one".