12120101100121 has 16 divisors (see below), whose sum is σ = 13945122525568. Its totient is φ = 10318552934400.

The previous prime is 12120101100059. The next prime is 12120101100127. The reversal of 12120101100121 is 12100110102121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12120101100121 - 2¹⁷ = 12120100969049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120101100127) 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, 1426920 + ... + 5126041.

It is an arithmetic number, because the mean of its divisors is an integer number (871570157848).

Almost surely, 2^{12120101100121} is an apocalyptic number.

It is an amenable number.

12120101100121 is a deficient number, since it is larger than the sum of its proper divisors (1825021425447).

12120101100121 is a wasteful number, since it uses less digits than its factorization.

12120101100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6554752.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12120101100121 its reverse (12100110102121), we get a palindrome (24220211202242).

The spelling of 12120101100121 in words is "twelve trillion, one hundred twenty billion, one hundred one million, one hundred thousand, one hundred twenty-one".