12102011121 has 16 divisors (see below), whose sum is σ = 16242730560. Its totient is φ = 8014697280.

The previous prime is 12102011101. The next prime is 12102011137. The reversal of 12102011121 is 12111020121.

It is not a de Polignac number, because 12102011121 - 2⁶ = 12102011057 is a prime.

It is a super-3 number, since 3×12102011121³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12102011097 and 12102011106.

It is not an unprimeable number, because it can be changed into a prime (12102011101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335835 + ... + 1344863.

It is an arithmetic number, because the mean of its divisors is an integer number (1015170660).

Almost surely, 2^12102011121 is an apocalyptic number.

It is an amenable number.

12102011121 is a deficient number, since it is larger than the sum of its proper divisors (4140719439).

12102011121 is a wasteful number, since it uses less digits than its factorization.

12102011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11936.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12102011121 its reverse (12111020121), we get a palindrome (24213031242).

The spelling of 12102011121 in words is "twelve billion, one hundred two million, eleven thousand, one hundred twenty-one".