12120130021121 has 16 divisors (see below), whose sum is σ = 12810992409600. Its totient is φ = 11434594071888.

The previous prime is 12120130021117. The next prime is 12120130021127. The reversal of 12120130021121 is 12112003102121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12120130021121 - 2² = 12120130021117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12120130021121.

It is not an unprimeable number, because it can be changed into a prime (12120130021127) 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, 14006270 + ... + 14846408.

It is an arithmetic number, because the mean of its divisors is an integer number (800687025600).

Almost surely, 2^{12120130021121} is an apocalyptic number.

It is an amenable number.

12120130021121 is a deficient number, since it is larger than the sum of its proper divisors (690862388479).

12120130021121 is a wasteful number, since it uses less digits than its factorization.

12120130021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843308.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12120130021121 its reverse (12112003102121), we get a palindrome (24232133123242).

The spelling of 12120130021121 in words is "twelve trillion, one hundred twenty billion, one hundred thirty million, twenty-one thousand, one hundred twenty-one".